求函数f(x,y)=3x²y+y³-3x²-3y²+2的极值.明天就要考试了,稍后补分1.求函数f(x,y)=3x²y+y³-3x²-3y²+2的极值.2.∫(下面是1上面是e) x²lnxdx3.设y=x²ln (根号1+cos²x),求y'4.求
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![求函数f(x,y)=3x²y+y³-3x²-3y²+2的极值.明天就要考试了,稍后补分1.求函数f(x,y)=3x²y+y³-3x²-3y²+2的极值.2.∫(下面是1上面是e) x²lnxdx3.设y=x²ln (根号1+cos²x),求y'4.求](/uploads/image/z/11503598-14-8.jpg?t=%E6%B1%82%E5%87%BD%E6%95%B0f%28x%2Cy%29%3D3x%26sup2%3By%2By%26sup3%3B-3x%26sup2%3B-3y%26sup2%3B%2B2%E7%9A%84%E6%9E%81%E5%80%BC.%E6%98%8E%E5%A4%A9%E5%B0%B1%E8%A6%81%E8%80%83%E8%AF%95%E4%BA%86%2C%E7%A8%8D%E5%90%8E%E8%A1%A5%E5%88%861.%E6%B1%82%E5%87%BD%E6%95%B0f%28x%2Cy%29%3D3x%26sup2%3By%2By%26sup3%3B-3x%26sup2%3B-3y%26sup2%3B%2B2%E7%9A%84%E6%9E%81%E5%80%BC.2.%E2%88%AB%28%E4%B8%8B%E9%9D%A2%E6%98%AF1%E4%B8%8A%E9%9D%A2%E6%98%AFe%29+x%26sup2%3Blnxdx3.%E8%AE%BEy%3Dx%26sup2%3Bln+%28%E6%A0%B9%E5%8F%B71%2Bcos%26sup2%3Bx%29%2C%E6%B1%82y%274.%E6%B1%82)
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