How to check the positivity of a function?

2 views (last 30 days)
Hi,
Given a function f(x), with x defined as a symbolic variable, how can I check the positivity function of f(x)?
Any kind of help?

Accepted Answer

Walter Roberson
Walter Roberson on 29 Sep 2021
First two checks: is limit(f(x),x,infinity) negative? Is limit(f(x),x,-infinity) negative?
After that: find the critical points of f(x) using calculus, and check to see if f is negative at any of them.

More Answers (0)

Categories

Find more on Symbolic Math Toolbox in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!