JEE Math Practice Question
The function $$f(x) = \left| {{x^2} - 2x - 3} \right|\,.\,{e^{\left| {9{x^2} - 12x + 4} \right|}}$$ is not differentiable at exactly :
- A.four points
- B.three points
- C.two points
- D.one point
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