Prove that the function given by f(x)=cosx is(a) decreasing in (0,π)( – InterviewSolution

1.	Prove that the function given by f(x)=cosx is(a) decreasing in (0,π)(b) increasing in (π,2π), and (c) neither increasing nor decreasing in (0,2π)
Answer» Prove that the function given by $f (x) = cos x$ is $(a)$ decreasing in $(0, π)$ $(b)$ increasing in $(π, 2 π)$ , and $(c)$ neither increasing nor decreasing in $(0, 2 π)$

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