SOLUTION: Graph (and show the graph) to determine all local and absolute extrema to the nearest hundredth for: y = 2x^3 – 7x^2 – 4x Thank you!

Algebra ->  Rational-functions -> SOLUTION: Graph (and show the graph) to determine all local and absolute extrema to the nearest hundredth for: y = 2x^3 – 7x^2 – 4x Thank you!       Log On


   

Question 1123377: Graph (and show the graph) to determine all local and absolute extrema to the nearest hundredth for: y = 2x^3 – 7x^2 – 4x
Thank you!
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
6x%5E2-14x-4=0
3x%5E2-7x-2=0
Zeros at %287%2B-+sqrt%2849%2B24%29%29%2F6
Mean that original equation has extreme y values at:
%287%2B-+sqrt%2873%29%29%2F6
or
about -0.257 and +2.59

You might try Rational Roots Theorem to find any rational roots to help. Maybe there is a root of original equation for x at 4.

graph%28400%2C400%2C-15%2C15%2C-20%2C10%2C2x%5E3-7x%5E2-4x%29