Answer:
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Step-by-step explanation:
The temperature in the ice rink must stay below 50° F. This morning the temperature was 68°F. The ice rink runs a cooling device
2 answers:
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The Jacobian for this transformation is
with determinant , hence the area element becomes
Then the integral becomes
where is the unit circle,
so that
Now you could evaluate the integral as-is, but it's really much easier to do if we convert to polar coordinates.
Then