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anonymous
 5 years ago
Hey, Amistre64, can you help me with a derivative, please?
anonymous
 5 years ago
Hey, Amistre64, can you help me with a derivative, please?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[f(x)=e ^{x }11e ^{x}12x\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I need to find the local extreme points and the inflection points, which means I need the first and second derivatives. I do not know what to do with that e. It's not a regular e it's that math e. What's it called in math language?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2the derivative of e^x = e^x teh derivative of 11e^x = +e^x derivative of 12x = 12

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2e = oilers number = 2.71828182845905...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0But doesn't that e have a funny latin name or something?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0How about the second derivative?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2its named ofter euler, pronounced oiler

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2the second derivative is similar except for 12 goes to 0 e^x goes to e^x again and +11e^x for to 11e^x

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[f(x) = e^x 11e^{x}12x\] \[f'(x) = e^x + 11e^{x} 12\] \[f''(x) = e^x 11e^{x}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So do I find the points of inflection and the extrema the way I would as if they were regular numbers? I just don't know what to do with something that isn't a regular number, like this and delta and pi. They really bother me. I don't mind the x's in algebra, but these are way out there.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2e is a regular number; it just has a special name :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2but yes, find them the regular way

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok, so if I am finding the points of interest using e, do I use the number value for it or do I just leave it as e?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2you can approximate it with 2.7183

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0would I do that normally with a problem that has e in it? Use the number value, I mean. Is that the way it's supposed to be done? Does that link show stuff about e?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2e is an exact value, so any number form of it is going to be an approximation; then way we solve for this is prolly thru logarithms

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2ln(x) 11/ln(x)  12x maybe?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2ln(x) = e and 1/ln(x) = e^(x)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2well, ln(y) is a better term than x in that case but thats semantics

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0This is making my stomach upset, all this crazy math stuff with these weird alien symbols. It's really scary how much I don't know and to think I am getting an A in calculus! Don't ask me how!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2f′(x)= e^x +11e^(−x) −12 = 0 when e^x +11e^(−x) = 12 i dont think theres an easy way to desribe it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I took a calculus test today and this was on it, finding the extrema and points of inflection, and I just never saw such a problem. It wasn't in our homework problems, and since i am taking this online it's not like I can go ask the instructor. I just don't know what to do with it.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2e^x^2 12e^x +11= 0 is a quadratic

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2do you know what inflection and min and max are?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2a^2 12a + 11 = 0 when.... (a11)(a1) = a = 1 and a = 11

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0We just got done with the chapters and I did really well with the trig functions and the regualr numbers in finding the critical points and local max and min and extreme max and min, but this one i didn't work before and i don't have the common sense to be able to apply the regular rules to something like this. If someone doesn't show me step by step, I will not understand. Got a 12.7 out of 15 points on the test.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2when e^x = 1 or 11 we should test this

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2that doesnt seem to work out... more than likely it just a matter of using what you know to figure out what you dont think you know

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2and an 84% is a B so :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0But what if you don't know anything? What then? That's the way I feel about calculus most of the time! I work on Math XL sometimes 14 hours a day, and only got a B. My overall greade is a 96% but I can feel it slowly slipping away... How do I find out how to solve that e problem for the critical points and stuff? Any suggestions?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2first derive it; and see what you can do to it algebraicly f'(x) = e^x +11e^(−x) −12 ; we know that a negative exponent is a reciprocal right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0uh...I guess. Exponents aren't my strong point. None of it really, it's been way too long to just remember!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2normally a negative exponent means to invert it; let me recheck that thought tho

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I doknow that x^3, say, is 1/x^3

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2spose we saw a normal number like 2^x; how would it graph look?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2if we plot it it looks like this...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2if we plot 2^(x) it loks like this, the one in red

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0dont' mean to be rude, but there wasn't a line in red in that second attachment.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2which is the same graph as (1/2)^x lol.... forgot to save before i attached

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no red line there either. I'm sorry to be such a pain. Just when I think I may actually be not so dumb, I realize I was mistaken. I know nothing about any of this and i really don't know what to do!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2soo... 2^x is the same as (1/2)^x

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2the last jpg has both lines

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2e^x = (1/e)^x ; its just a number like 2 or 5 just written in a way we can express it exactly

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0got that graph. It is symmetrical about the y axis. That's about all I know.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So i might be able to do that e problem with using the value for it? Do I still need logs for that?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[e^x +\frac{11}{e^x}12=0\]

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[e^x +\frac{11}{e^x} = 12\] right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes, tht is algebra! i like algebra! alot!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[\frac{(e^x)^2 + 11}{e^x} = 12\]

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[(e^x)^2 + 11 = 12e^x\]

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[(e^x)^2 12(e^x) + 11 = 0\]

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2u = e^x \[u^2 12u +11 = 0\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0don't mean to sound obtuse, but this is the derivative you are solving for 0, right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok that factors to u11 and u1, which give u=11 and u=1. Are those critical points, then?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2are we looking to solve an equation with u? or e^x?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The e one. I need to find critical points so I can find the inflection points and the extrema.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2u = 11, or 1 u = e^x e^x = 11, or 1

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2e^x = 11 ; ln(11) = x e^x = 1 ; ln(1) = x now this is calculator time....

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2ln(11) = 2.398.... ln(1) = 0 are our critical points

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Does this problem have a domain of negative to positive infinity?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2teh tree terms all have domains that are form inf to inf

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2the inflection point is the axis of symettry of the quadratic... so at x = halfway between 0 and 2.398.... is your inflection point

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2http://www.wolframalpha.com/input/?i=%28e^x%29%2811%2F%28e^x%29%2912x tells me im right :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2the main point here is that you see how I turned this into a quadratic, something that you shuold be familiar with alrady

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0But do I have to have exact numbers? I mean the way we have been doing this, every point of inflection and max and min all have very specific cooridnates. I'm sorry I' m so dumb at this. I'll bet you're a male, right? Pardon me, but I cannot tell for sure by your user name and I personally think men are much better with numbers. All my math teachers were male, all though my years of school.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2my kids call me 'daddy' :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I have a 13 and 15 year old too! I atually have 5, 6,8,11,13,15. 4 girls and a boy. Your kids are so lucky to have such a smart dad!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2:) thnx. Lotta kids on your end, nothing better to do in the winter? ;)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0lol~!!!!!!!!!!!! funny guy! Never wanted kids, actually, but now...they are somethin aren't they? Actually, they will be home in a couple of minutes. Almost summer now, I bet it's HOT there already!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2its been chillly these past few days, had a front move thru and cooled us down

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Cooled you down to what? 83 instead of 85? lol

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2lotta kids is is a sign of catholic or mormon... statistically speaking that is

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2:) water freezes at 60 here

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0my husband is a reformed catholic. We are both lutheran now. But they don't believe in birth control either. Ha!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2I grew up with German Catholic family; joined the Mormons with mom back in 84 tho and aint looked back since :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0not familiar with the mormon religion. Just took a christian worldview course before this calculus. It was awesome! I know quite a few people in Florida. do you like florida?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2florida is ok..... been here for about 40 years now; borned in Lakeland and lived in dadecity area most me life.... thats north of tampa

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2lived in north carolina for a few months after mom died... that was nice country

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2the exact form would be ln(11) and 0 for our critical points

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok and badk to math...sorry. I am definitely female; nosy and all! Ssorry! But how do you know all this math stuff? Were you a teacher ever? Or do you just like numbers?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[f''(x)=e^x \frac{11}{e^x}\]

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2ive always liked math; but grew up doing labor and was a carpenter for 15 years, hurt my back and decided to get a degree in Math to teach at college

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That ln(ll) thing actually looks familiar. I need to go back and look at the homework problems. IE is really bad on this website! I'ts jmping all over the place!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you teach at college?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2\[\frac{(e^x)^2 11}{e^x} = 0\]

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2i gotta get a masters in math to teach at collegge, so thats what Im working on now

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That is so awesome. What kind of math do you want to teach? Me, I want to teach algebra.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2u = e^x is still a good substitute; so lets do this: u^2  11 = 0 when u = ?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2Any college math I would like to teach, I see the way the older folks light up when the finally realize something that they really knew all along

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2I tried ti get a tutring job at the college here, but they dont seem to want my abilities...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0This is really crazy, me asking you this extremely complicated question online. I need a tutor! But I don't think you'd drive from Florida to Illinois to tutor, so...what to do? I think now that I have the derivative of that, maybe I will try to do something with it. Now that I took the tesst, it doesn't matter so mucch unless I retake it and can get that one correct this time.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2my guess is abt 1.199...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2florida to illinios is a long commute lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0My best friend moved to florida about 7 years ago, and I miss her so much. She lives in Bradenton, the home to Tenth Avenue North.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2ok... i took the 2nd derivative to be (e^x)^2  11 = 0 to find the inflection points... whichi i believe are just halfway between 0 and ln(11); so thats my prediction till I see otherwise :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2Bradenton is about 1.5hours to the south of me..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how do you know all this math stuff? I spent literally 80 hours in the past 5 days doing this and I still don't know it!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2e^x = sqrt(11) or e^x = sqrt(11). sqrt(11) is not possible so that leaves e^x = sqrt(11) ln(sqrt(11))= x = 1.199.... I was right lol

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2I taught myself it really; and the stuff I aint to sure about, I pick up on in class

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2download firefox; this site is much better with firefox

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I have firefox and use it for most of the stuff, but some websites don't support it, like MathXL for instance.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2First week in intermediate algeabra and I was done with all the homework assignments; so my teacher gave me the college algebra/trig book and I finished that one too

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2then I got me some calculus books from the library and taught myself up to like cal3 or 4

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I got hung up on a story problem in my 15yr old daughter's algebra book last night. Bery frustrating!!!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I mean very, not bery.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2:) i read a book called, "How to solve word problems" that was very informative.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0There's really a book that tells you how to solve word problems? The ones I get the most hung up on are the d=rt ones.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I can't figure out how they have t and call it speed.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2had to look at an email; trying to get into a 4year college for the fall instead of community college

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2and pell grant refund came in so I can have some money to vist the kids this weekend :) YAY!!! been like 3 weeks without them :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Couldn't imagine not seeing my kids; it must be hard. I got pell grant money for GCU. It's not so bad in some circumstances being near poverty level! lol ;)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2i had to get insurance and car stuff this year and that ate alot of the last stuff..... been riding on empty for a few weeks now just hoping :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0story of my life...riding on empty! I don't work in the real sense of the word and all the burden then falls on my husband which is a huge burden with 5 kids!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2yeah, gotta show resoect to someone who can hold down the fort like that these days

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah, really,. He's really good about it too, just doing it and not complaining about it. Of course, he, on the other hand hasn't done a load of laundry for 16 years or the dishes for even longer! so I guess it all evens out...I clean up after everyone here and he goes out to work so he doesn't have to!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2if your happy with the way things have worked out; then thats all the really matters in my opinion. My wife was never happy with things, and ended up simply leaving one day to go play with drugs and ruin her life

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2i gotta go do some homework assignments for statitstics class. But I got a secret :) The book in the reference section at the library is teh teachers edition so all the answers are in it lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That's too bad about your wife. Things sometimes don't go the way we want them to, do they? Do you get all the answers for me from your answer manual! Dontcha wish there was one for life? Or maybe they call it the Bible! Have a great day in florida; talk to you very soon! Thanks again.
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