I need help with this question, giving 250fg for the best explanation & answer!

step 1) rewrite all fractions / sqrts to exponents
step 2) apply the chain rule

most of that is going to use the power rule, so look that up

where are you having the problem?

i know that im having trouble with approaching the equations when they in square root and fraction forms

so rewrite them into exponent form first

example:

f(x) = sqrt(x+1)

rewritten:
f(x) = (x+1)^0.5

chain rule:
f'(x) = 0.5*(x+1)^-0.5 * dx/dx
f'(x) = 0.5*(x+1)^-0.5 * 1

rewriting:
f'(x) = 1 / ( 2 sqrt(x+1) )

try one of the problems out and show every step. when you get to the step you're having the problem, i'll walk you through it.

b ) f(x)= -3x^4-4x^3+3x^2-6x+1

1st deriv: -12x^3-12x^2+9x-6
2nd: -36x^2-144x+9

??

This post was edited by alex_was_here on Apr 10 2015 04:47pm

The bolded parts are wrong. Why are you sometimes multiplying the exponent and the coefficient and other times raising the coefficients to the exponent?

-12x^3 - 12x^2 + 6x -6

-36x^2 - 24x + 6

This post was edited by RzChaos on Apr 10 2015 04:51pm

You don't have any fg.

nice handwriting
that's good
i can't even come anywhere close to half of that,,

This post was edited by saber_x3 on Apr 11 2015 12:42am