Question

let f(x) = 2x^5-5x^4

find open intervals on which f is
a) increasing
b)decreasing
Find values of x at which f has
c) relative max and min
find open intervals
d) concave upward
e) concave downward
c) find the inflection points of f

Answer 1

Consider the function f(x) = 5 (x - 5)^(2//3) . For this function there are two important intervals: (-\infty, A) and (A,\infty) where A is a critical number.
Find A