- #1

- 39

- 0

ʃʃ cos(x+y)dxdy with upper limits of pi/2 and lower limits of 0 for both integrals

My answer came out as 0.

Can anyone confirm this?

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- Thread starter eddysd
- Start date

- #1

- 39

- 0

ʃʃ cos(x+y)dxdy with upper limits of pi/2 and lower limits of 0 for both integrals

My answer came out as 0.

Can anyone confirm this?

- #2

Mark44

Mentor

- 35,052

- 6,791

ʃʃ cos(x+y)dxdy with upper limits of pi/2 and lower limits of 0 for both integrals

My answer came out as 0.

Can anyone confirm this?

That's what I get.

- #3

- 39

- 0

cos(x+y)=cos(x)cos(y)-sin(x)sin(y)

Is there another way of doing it?

- #4

Mark44

Mentor

- 35,052

- 6,791

Finally, integrate cos(y) - sin(y) with respect to y, and evaluate the antiderivative at pi/2 and 0.

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