Point of inflection (If f'' changes sign at c (f continuous there), (c,f(c)) is a point of)
jee-mainjee-advanced
If f'' changes sign at c (f continuous there), (c,f(c)) is a point of inflection
What each symbol means
| Symbol | What it stands for |
|---|---|
| c | x-coordinate where concavity switches |
When to use this
f continuous at c; f'' changes sign crossing c (f''(c) may be 0 or undefined).