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take derivitive first :D

brb :)

okay tell me when your back

take dervitive first of all : can you do that?

I dont remember reading anything about derivatives in the text book

how about differentials?

A little. I remember seeing it. Didnt go into much detail

you weren't paying much attention lol :P

Can you tell me. or send me a link about them. either one is fine. :)

also the factor rule :)

which factor rul

what do i plug in for d?

yes

no

But i saw where I messed up!

its fixed

was i right tho :)

Thank you so much!

weird tho if you not familiar with calc 1 concepts then it is weird problem to do.

Im not in Calc 1 lol

precalc?

yes

Voila, the answer given to us by calculus matches up:
f'(4) = 2x+5 = 2*4+5=13

aaa :) calc way is easier tho.

:)

Thank you both!

Im going through all the qustions I missed so i can understand them better

good for you :D