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Raiyan Makki Grade: 11
        

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)

AskiitiansExpert Abhinav Batra
25 Points
										

Dear Raiyan


F(x)=f(x)g(x)


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


at point x=x0


F`(x0)=f`(x0)g(x0)+f(x0)g`(x0)


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


ALL THE BEst


ABhinav batra



6 years ago
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