Calculate the integral of f(x, y) = x − y over the region x² + y² ≤ 81, x + y ≥ 9 by changing to polar coordinates. (Use symbolic notation and fractions where needed.) Ib - y) dA= (x -

Q: b) Evaluate the integral by converting in polar coordinates [T 13 dy dr

A: (1) tan−1⁡(x)=cot−1⁡(1/x)(2) tan−1⁡(x)+cot−1⁡(x)=π/2 (3) 1/sin⁡(x)=csc⁡(x) .

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A: We will find out the required solution.

Q: SHOW COMPLETE SOLUTION. PLEASE MAKE THE SOLUTION/HANDWRITING CLEAR.   THANKYOU!

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