7. If \( x \in[0, \pi] \), then \( f(x)=x \sin x+\cos x+\cos ^{2} x \) is a) increasing c) meither increasing nor decreasing b)

7. If \( x \in[0, \pi] \), then \( f(x)=x \sin x+\cos x+\cos ^{2} x \) is a) increasing c) meither increasing nor decreasing b) decreasing Hence \( f(x) \) is non-monotonic d) None of these

7. If \( x \in[0, \pi] \), then \( f(x)=x \sin x+\cos x+\cos ^{2} x \) is a) increasing c) meither increasing nor decreasing b) decreasing Hence \( f(x) \) is non-monotonic d) None of these

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