find the value

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62
Lokesh Verma ·

the range of f(x) is integers...

also, it is only non negetive integers..

when h is +ve and very small f(-1+h) = f(1-h) = 0

when h is -ve and very small f(-1-h) = f(1+h) = 1

This means h is not a continous function at h=-1
SO the derivative does not exit!

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