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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
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sir if we put x=0 then the value of the function is 0 .. i think this is the minimum value in [0,π]
f(0) is galobal minima and f(2pi/3).is local minima
but at x=0 f'(x) ≠0
but it is giving the minimum value??
minimum value zero
thanks