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Let a in ZZ and [t] be the greatest int...

Let `a in ZZ ` and [t] be the greatest integer `le t`. Then the number of points, where the function `f(x) = [a + 13sinx], x in (0, pi)` is not differentiable, is

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2023-Question
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