二重积分化为极坐标形式的问题.∫(上1下1/2)dx∫(上x下1-x) f(x,y)dy+∫(上2下1)dx∫(上√2x-x^2下0) f(x,y)dy.画图可知θ由边界y=x即是θ=π/4确定为(0,π/4),请问r如何确定?图形中有三条边界呀?(θ=π/4,r=1/(
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![二重积分化为极坐标形式的问题.∫(上1下1/2)dx∫(上x下1-x) f(x,y)dy+∫(上2下1)dx∫(上√2x-x^2下0) f(x,y)dy.画图可知θ由边界y=x即是θ=π/4确定为(0,π/4),请问r如何确定?图形中有三条边界呀?(θ=π/4,r=1/(](/uploads/image/z/2409819-51-9.jpg?t=%E4%BA%8C%E9%87%8D%E7%A7%AF%E5%88%86%E5%8C%96%E4%B8%BA%E6%9E%81%E5%9D%90%E6%A0%87%E5%BD%A2%E5%BC%8F%E7%9A%84%E9%97%AE%E9%A2%98.%E2%88%AB%28%E4%B8%8A1%E4%B8%8B1%2F2%29dx%E2%88%AB%28%E4%B8%8Ax%E4%B8%8B1-x%29+f%28x%2Cy%29dy%2B%E2%88%AB%28%E4%B8%8A2%E4%B8%8B1%29dx%E2%88%AB%28%E4%B8%8A%E2%88%9A2x-x%5E2%E4%B8%8B0%29+f%28x%2Cy%29dy.%E7%94%BB%E5%9B%BE%E5%8F%AF%E7%9F%A5%CE%B8%E7%94%B1%E8%BE%B9%E7%95%8Cy%3Dx%E5%8D%B3%E6%98%AF%CE%B8%3D%CF%80%2F4%E7%A1%AE%E5%AE%9A%E4%B8%BA%280%2C%CF%80%2F4%29%2C%E8%AF%B7%E9%97%AEr%E5%A6%82%E4%BD%95%E7%A1%AE%E5%AE%9A%3F%E5%9B%BE%E5%BD%A2%E4%B8%AD%E6%9C%89%E4%B8%89%E6%9D%A1%E8%BE%B9%E7%95%8C%E5%91%80%3F%28%CE%B8%3D%CF%80%2F4%2Cr%3D1%2F%28)
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