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timo86mBest ResponseYou've already chosen the best response.2
take derivitive first :D
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
okay tell me when your back
 11 months ago

goformit100Best ResponseYou've already chosen the best response.0
First of all for solving this question do you know the conception of : Derivatives. and i know you can then definitely can solve the question on your own
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
take dervitive first of all : can you do that?
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
I dont remember reading anything about derivatives in the text book
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
how about differentials?
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
A little. I remember seeing it. Didnt go into much detail
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
you weren't paying much attention lol :P
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
Can you tell me. or send me a link about them. either one is fine. :)
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
anyhoo first we must take the derivative aka differential. x^2+5*x luckily this one is one of the most basic and using the rules aka formulas. http://myhandbook.info/form_diff.html look at constant rule, sum rule and power rule :D try it out if you can
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
also the factor rule :)
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
what do i plug in for d?
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
and d/dx just means the derivative operator so d/dx(x^2+5*x) means derivitve of x^2+5*x with respect to x d/dx(x^2)+ d/dx(5*x) the sum rule this makes it more easy :) seperated into 2 small derivatives instead of one big one. we handle it as 2 seperate problems d/dx(x^2)= 2x by the power rule simply decrease the exponent by 1 and multiply the variable and coefficient by the exponent you just decrased. you get 2 :). d/dx(5*x) = 5 by factor rule now you plug back in because you did them seperately 2x+5 and that is derivative :) with me so far?
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
2x+5 is also a tangent function which gives the slope of the tangent at any given x. For example at x=0 the slope is 5. they want it at 4 tho. So plug it in 2(4)+5=8+5=13 That is your answer :)
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
But i saw where I messed up!
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
Thank you so much!
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
weird tho if you not familiar with calc 1 concepts then it is weird problem to do.
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
Im not in Calc 1 lol
 11 months ago

bahrom7893Best ResponseYou've already chosen the best response.0
hmm maybe if we do: x1 = 3 x2 = 5 y1 = 9+15 = 24 y2 = 25+25 = 50 M = (y2y1)/(x2x1) = (5024)/(53) = 26/2=13
 11 months ago

bahrom7893Best ResponseYou've already chosen the best response.0
Voila, the answer given to us by calculus matches up: f'(4) = 2x+5 = 2*4+5=13
 11 months ago

timo86mBest ResponseYou've already chosen the best response.2
aaa :) calc way is easier tho.
 11 months ago

Skittles456Best ResponseYou've already chosen the best response.1
Im going through all the qustions I missed so i can understand them better
 11 months ago
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