1. Use a change of variables to evaluate ſc ¡f cos(x) dA where R is trapezoidal region with vertices (0,1), (1,0), x+y R (3,0) and (0,3).

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Author:Erwin Kreyszig
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1. Use a change of variables to evaluate ff cosx=y
COS
x + y
R
(3,0) and (0,3).
x-YdA where R is trapezoidal region with vertices (0,1), (1,0),
Transcribed Image Text:1. Use a change of variables to evaluate ff cosx=y COS x + y R (3,0) and (0,3). x-YdA where R is trapezoidal region with vertices (0,1), (1,0),
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