JEE Main 2019 Mathematics question
Let be differentiable at c ∈ R and f(c) = 0. If g(x) = |f(x)|, then at x = c, g is:
Answer: (A)
Solution
from the two sides; equal only when f′(c) = 0.
Let be differentiable at c ∈ R and f(c) = 0. If g(x) = |f(x)|, then at x = c, g is:
from the two sides; equal only when f′(c) = 0.