is there anothe way to solve this w/o the chain rule? because i haven't learned it yet..and am not supposed to use it..
if g(x)=rad(3-5x), use the definition of a derivative to find g'(x)..i dont' understand how to solve this...the answer is supposed to be...g'(x)= -5/2 (3-5x)^(-1/2)
2007-10-20 19:23:10 · 2 answers · asked by Haya 1 in Science & Mathematics ➔ Mathematics
Haven't you had the power rule?
d/dx (f(x))^n = (f(x)^(n-1) * d/dx f(x)
It drops right out of that.
Doug
2007-10-20 19:42:34 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋
you should try this, yet you additionally can do the chain rule, which does no longer contain multiplying out, and is plenty much less complicated on greater complicated issues to multiply out. first say that u=4x you have 2 equations now: u=4x y=u^3 take the spinoff of the two dy/du=3u^2 du/dx=4 multiply the derivatives and substitute decrease back in for u dy/dx=4*3(4x)^2 simplify in case you like, you get the comparable answer: dy/dx=192x^2
2016-10-13 09:41:54 · answer #2 · answered by pienkowski 4 · 0⤊ 0⤋