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Ques- Is it reosonable to assert that the product F(x)=f(x)g(x) has no derivative at x=xo if:

the function f(x) has dervative at point xo,and the function #(x) has no derivative at this point ?

6 years ago


Answers : (1)


Dear Raiyan


F`(x)=f`(x)g(x)+f(x)g`(x)   (Using the chain rule)

at point x=x0


But  g`(x0) does not exist .so F`(x0) al so does not exist.


ABhinav batra

6 years ago

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