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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Suman Kumar
Find ist derivative. Equate the equation with zero. You will get a value for 'x' . Then again find 2nd derivative of the function. Substitute the value of 'x' . if 2nd derivative is less than zero then 'x' is a maxima for the function
is that we have to find out two times derivative of x
yes Arun