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Question

At what points does the derivative of the function y = x3 coincide with the value of the function itself?

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Solution

y=x3

dydx=3x2

Now, y=dydx

x3=3x2

x2(x3)=0

x=0,3

Corresponding y=0,27

Hence. at points (0,0) and (3,27), value of function and its derivative are same.

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