Use Integration Tables to Evaluate the Integral $\int _ { 0 } ^ { \pi / 2 } 21 x \cos x d x$

question 82

Multiple Choice

Use integration tables to evaluate the integral $\int _ { 0 } ^ { \pi / 2 } 21 x \cos x d x$

• A) \(21 \pi\)
• B) \(\frac { 21 \pi } { 2 }\)
• C) \(21 \left( \frac { \pi - 1 } { 2 } \right)\)
• D) \(21 ( \pi - 1 )\)
• E) \(21 \left( \frac { \pi } { 2 } - 1 \right)\)

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