Use Differentiation to Determine Whether the Integral Formula Is Correct$$\int x \cos x d x = \frac { x ^ { 2 } } { 2 } \sin x + C$$

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The Answer of Use Differentiation to Determine Whether the Integral Formula Is Correct$$\int x \cos x d x = \frac { x ^ { 2 } } { 2 } \sin x + C$$

Use Differentiation to Determine Whether the Integral Formula Is Correct $\int x \cos x d x = \frac { x ^ { 2 } } { 2 } \sin x + C$