Necessary condition for maxima/minima (f'(c) = 0 at stationary points; also check endpoints and points where f')
jee-mainjee-advanced
f'(c) = 0 at stationary points; also check endpoints and points where f' is undefined
What each symbol means
| Symbol | What it stands for |
|---|---|
| c | Point in domain of f where extremum may occur |
| f'(c) | First derivative evaluated at c |
When to use this
f must be defined on the interval; for absolute extrema on [a,b], check all critical points plus endpoints a and b.