calculus
posted by Martha .
let f(x) = 2x^55x^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

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
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