plz help me to find out the solution of this question its very simple but i am confused.the question is(adsbygoogle = window.adsbygoogle || []).push({});

"CAN WE CHECK A FUNCTION WHICH IS NOT DIFFERENTABLE EXCATLY AT TWO POINT>IF YES THEN HOW WE CHECK IT"

can i use sin or cos function,or is the graph is straight or not:surprised

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# Homework Help: How do you normally check if functions are differentiable?

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