- #1
christian0710
- 409
- 9
Homework Statement
Hi I'm suppose to find the critical point and minimun or maximum of f(x)=(4/5)
Homework Equations
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I have a question regarding how to interprete the results
The Attempt at a Solution
1) we start by finding f'(x)=4/(5*x^1/5)Now my first question is this: we cannot divide by 0, so i it correct to assume that f'(x) must be undefined at x=0?
Usually we set f'(x)= 0 to find the x value, and that value is the critical point.
4/(5*x^1/5) = 0 but the only result i can get is 4=0 if i solve this equation which is surely not true.
What is the correct way to interprete or argue about this result?