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Evaluate โˆซ0๐œ‹/2โˆซ02๐‘ฆsinโก๐‘ฆ๐‘‘๐‘ฅ๐‘‘๐‘ฆ4๐‘ฆ2โˆ’๐‘ฅ2Group of answer choices๐œ‹/2๐œ‹/6๐œ‹/4โˆ’๐œ‹/2 PreviousNext

Question

Evaluate โˆซ0๐œ‹/2โˆซ02๐‘ฆsinโก๐‘ฆ๐‘‘๐‘ฅ๐‘‘๐‘ฆ4๐‘ฆ2โˆ’๐‘ฅ2Group of answer choices๐œ‹/2๐œ‹/6๐œ‹/4โˆ’๐œ‹/2 PreviousNext

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Solution

The given integral is a double integral, which is โˆซ from 0 to ๐œ‹/2 โˆซ from 0 to 2y (sin y dx dy) / (4y^2 - x^2).

First, we integrate with respect to x. The integral of dx is just x, so we have:

โˆซ from 0 to ๐œ‹/2 [x*sin(y) from 0 to 2y dy] / (4y^2 - x^2)

This simplifies to:

โˆซ from 0 to ๐œ‹/2 [2y^2*sin(y) - 0] dy / (4y^2 - x^2)

The x term in the denominator cancels out because we are integrating with respect to y, so we are left with:

โˆซ from 0 to ๐œ‹/2 2y*sin(y) dy / 4y^2

This simplifies to:

1/2 โˆซ from 0 to ๐œ‹/2 sin(y) dy

The integral of sin(y) from 0 to ๐œ‹/2 is -cos(y) from 0 to ๐œ‹/2, which is 1. So the final answer is 1/2 * 1 = 1/2.

However, none of the provided answer choices match this result. There may be a mistake in the problem or the answer choices.

This problem has been solved

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