Destinyyyy
  • Destinyyyy
Refresher ...
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
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Destinyyyy
  • Destinyyyy
Find the vertical asymptotes, if any, of the graph of the rational function. g(x)= x over x^2 -1
Destinyyyy
  • Destinyyyy
answer x= 1, x=-1
Destinyyyy
  • Destinyyyy
@phi @IrishBoy123

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Destinyyyy
  • Destinyyyy
@Vocaloid @whpalmer4
superdavesuper
  • superdavesuper
can u draw out the eqn plz @Destinyyyy ?
Destinyyyy
  • Destinyyyy
|dw:1449184450888:dw|
superdavesuper
  • superdavesuper
ever use wolfram site 4 math help?
Destinyyyy
  • Destinyyyy
Nope.. I use mathway sometimes
superdavesuper
  • superdavesuper
they are similar...check it out: http://www.wolframalpha.com/input/?i=f%28x%29%3Dx%2F%28x%5E2-1%29&lk=4&num=1
Destinyyyy
  • Destinyyyy
But its doesnt say vertical asymptotes anywhere
superdavesuper
  • superdavesuper
true but u can kinda "eye-ball" them right? ;)
Destinyyyy
  • Destinyyyy
Um no
superdavesuper
  • superdavesuper
hint: those are the lines where the denominator becomes zero...
Destinyyyy
  • Destinyyyy
What?
Destinyyyy
  • Destinyyyy
Mathway says my answer is right so Ill just stick with it..
superdavesuper
  • superdavesuper
hahahaa may i know wat they are plz?
Destinyyyy
  • Destinyyyy
I said it above.. answer x= 1, x=-1
superdavesuper
  • superdavesuper
ooops sorry - right u are again :)
Destinyyyy
  • Destinyyyy
Okay.. I thought you were saying I was wrong.
superdavesuper
  • superdavesuper
no, i didnt read thro ur posts...sorry! but hey now u know wolframalpha - its a pretty cool site! :)
Destinyyyy
  • Destinyyyy
Next question.. Graph the rational function. f(x)= 4x^2 over x^2 -36
superdavesuper
  • superdavesuper
wanna try it out on wolfram? ;)
Destinyyyy
  • Destinyyyy
I just tried and it did 4 * x^2 over x^2 -36 :(
superdavesuper
  • superdavesuper
yes u need to be careful about the sequence; dats why i asked u to write it out a few times. here is how it should look like; note the brackets: http://www.wolframalpha.com/input/?i=f%28x%29%3D4x%5E2%2F%28x%5E2-36%29
Destinyyyy
  • Destinyyyy
Its exactly the same as mine
superdavesuper
  • superdavesuper
alright then what IS ur eqn?
Destinyyyy
  • Destinyyyy
But I need to remember how to solve it. I cant use a website when I take my final on Saturday
superdavesuper
  • superdavesuper
well graphing an eqn is different from solving it....ur Q asks u to graph it right?
Destinyyyy
  • Destinyyyy
|dw:1449185538450:dw|
Destinyyyy
  • Destinyyyy
Yes. I need to know how to graph it my self. Not with a website.
superdavesuper
  • superdavesuper
OK so the plot is how the eqn will look like...
Destinyyyy
  • Destinyyyy
Yeah.. I already figured that out.
superdavesuper
  • superdavesuper
if u need to graph an eqn in an exam, u either recognize it is a standard form like a circle, parabola or so; or like in this case, u pretty much have to put in x=-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6 n calculate the y values.
superdavesuper
  • superdavesuper
can u use a graphing calculator like one of those made by Ti?
Destinyyyy
  • Destinyyyy
Yeah I have one. But I have no clue how to graph on it. Im absolutely sure im suppose to solve it out on paper to be able to graph it.
Destinyyyy
  • Destinyyyy
I guess we can skip it and come back to it
superdavesuper
  • superdavesuper
yep...wuld require sum1 better in explanation than me to show u how! lol
Destinyyyy
  • Destinyyyy
Yeah :/
superdavesuper
  • superdavesuper
sorry....last Q?
Destinyyyy
  • Destinyyyy
Solve the polynomial inequality and graph the solution set on a number number line. Express the solution set in interval notation. x^2 -2x-8<0
Destinyyyy
  • Destinyyyy
I got 1+- 1i square root 7 ... I know I messed up some where
superdavesuper
  • superdavesuper
solving inequality means solving the eqn 1st...
superdavesuper
  • superdavesuper
unlikely dats the ans as it involves i which cannot be shown on a real number line....
superdavesuper
  • superdavesuper
x^2 -2x-8=0 u can solve by grouping or just the quadratic eqn...either way will work :)
Destinyyyy
  • Destinyyyy
I see where I messed up
superdavesuper
  • superdavesuper
Good :)
Destinyyyy
  • Destinyyyy
Answer- (-2,4)
superdavesuper
  • superdavesuper
correct now just plot the inequality on the number line n u are done!
Destinyyyy
  • Destinyyyy
Yep
superdavesuper
  • superdavesuper
careful about which part(s) of the number line where f(x) < 0

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