Question

Help! Fan + Medal

Consider the function y = 3x5 – 25x3 + 60x + 1. Find the critical points of this function.

None
–2, –1, 0, 1, 2
–2, –1, 1, 2
1, 2
–2, 2

Answer 1

you find the critical points of a function (extremums) by taking f'(x)=0

Answer 2

I think its B but I want to make sure, you know

Answer 3

But I tend to suck at taking derivatives of functions thats why I always want someone else's opinion

Answer 4

f'(x)=15x^4-75x^2+60=0
then solution space is : x =+-1, +-2

Answer 5

use the power rule \[\frac{ \delta x^n }{ \delta x } = n x^{n-1}\]

Answer 6

alrighty

Answer 7

So I got -2,-1,1,2 again so I am guessing that's the right answer. Thanks :]