Question
Evaluate the double integral.$$\begin{array}{l}{\iint_{R} x \cos y d A ; R \text { is the triangular region bounded by the }} \\ {\text { lines } y=x, y=0, \text { and } x=\pi}\end{array}$$
Step 1
The region R is bounded by the lines y=x, y=0, and x=π. So, we integrate y from 0 to x, and x from 0 to π. The function we are integrating is x cos y. So, the double integral is: $$ \int_{0}^{\pi} \int_{0}^{x} x \cos y \, dy \, dx $$ Show more…
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