WBJEE · Maths · Application of Derivatives
Let \(f(x)=1-\sqrt{\left(x^{2}\right)}\) where the square root is to be taken positive, then
- A \(f\) has no extrema at \(x=0\)
- B \(f\) has minima at \(x=0\)
- C \(f\) has maxima at \(x=0\)
- D \(\mathrm{f}^{\prime}\) exists at 0
Answer & Solution
Correct Answer
(C) \(f\) has maxima at \(x=0\)
Step-by-step Solution
Detailed explanation
Hint: \(f(x)=1-|x|, f\) has maxima at \(x=0\)
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