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试作适当变换，计算下列积分：
A.174.24.96:6088/Latex/latex.action?latex=KDEpXDtfe0R9XntcaW50IFxpbnQgfSh4K3kpc2luKHgteSlkeGR577yMRO%2B8nVxsZWZ0XHsgKHgs%0D%0AeSnvvZwwXGxlcSB4K3lcbGVxIFxwaSDvvIwwXGxlcSB4LXkgXGxlcSBccGlccmlnaHRcfe%2B8mw%3D%3D'
B.174.24.96:6088/Latex/latex.action?latex=KDIpXDtfe0R9XntcaW50IFxpbnQgfWVee1xmcmFje3l9e3greX19ZHhkee%2B8jEQ9XGxlZnRceyAo%0D%0AeCx5Ke%2B9nHgreVxsZXEgMe%2B8jHhcZ2VxIDDvvIx5XGdlcSAwXHJpZ2h0XH3vvJs%3D'
【参考答案】
(1)令
即
因为T将0≤x+y≤π变为0≤u≤π，0≤x-y≤π变为0≤υ≤π。又
......
(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)
B.174.24.96:6088/Latex/latex.action?latex=KDIpXDtfe0R9XntcaW50IFxpbnQgfWVee1xmcmFje3l9e3greX19ZHhkee%2B8jEQ9XGxlZnRceyAo%0D%0AeCx5Ke%2B9nHgreVxsZXEgMe%2B8jHhcZ2VxIDDvvIx5XGdlcSAwXHJpZ2h0XH3vvJs%3D'
【参考答案】
(1)令
即
因为T将0≤x+y≤π变为0≤u≤π，0≤x-y≤π变为0≤υ≤π。又
......
(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)
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