Let A and B be similar diagonalized matrices of order n and have the same eigenvalues, and prove that matrices A and ... 查看全部
2021-08-03 12:32
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2021-08-03 12:30
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回答图片识别成文本： Let(x) ( >0) is a particular solution to the differential equation2y"+y-y=(4-6x)e-x, which passes through th... 查看全部
2021-08-03 12:28
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回答图片识别成文本： Let z f[x +y, h(xsiny)], and f is second-order continuously partial, h is second-order- differentiable. and lim... 查看全部
2021-08-03 12:18
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2021-08-03 12:16
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回答图片识别成文本：Letu=f(x+y,x-yz), there=z(x,y)byz=yp(t)dt t, and is x+ continuously partial, is differentiable and+z)-p(x+z)-10f... 查看全部
2021-08-02 22:56
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2021-08-02 22:11
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2021-08-02 22:03
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2021-08-02 22:00
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回答At present, two buckets respectively contain 10 L of salt water with a concentration of 15 g/L. Now, clean water is inje... 查看全部
2021-08-02 21:53
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