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Let f(x)=sin x cos^(2)x,x in[0,pi] .Let ...

Let `f(x)=sin x cos^(2)x,x in[0,pi]` .Let `m` be the number of values of `x` at which `f(x)` is minimum and `n` be the number of values of `x` at which `f(x)` is maximum. Then the value of `m+n` will be

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