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et y=f(x) have second consecutive derivative in (-1,1) and f"(x)=0, test: (1) for any point at
匿名用户 匿名用户 2021-08-28 19:06 数学类Mathematics

  • 2021-08-30 03:48

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Calculate I=∮_L (y^2+x^2)dx+(2z^2-x^2)dy+(3x^2-y^2 )dz, where L is the intersection line
匿名用户 匿名用户 2021-08-28 19:05 数学类Mathematics

  • 2021-08-30 03:43

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Let f(x)=..., Try expanding f(x) as a power series of x
匿名用户 匿名用户 2021-08-28 19:04 数学类Mathematics

  • 2021-08-30 03:34

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Let z=f(x,y) be differentiable at the point (1,1), and
匿名用户 匿名用户 2021-08-28 19:03 数学类Mathematics

  • 2021-08-30 03:33

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Find (arctan e^x) /e^2x dx
匿名用户 匿名用户 2021-08-28 19:02 数学类Mathematics

  • 2021-08-30 03:33

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What is the correlation coefficient between X and Y when a coin is tossed n times, with X and Y
匿名用户 匿名用户 2021-08-28 19:00 数学类Mathematics

  • 2021-08-30 03:33

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Let the matrix A satisfy A^2+A-4E=0, where E is the identity matrix, find 〖(A-E)〗^(-1).
匿名用户 匿名用户 2021-08-28 19:00 数学类Mathematics

  • 2021-08-30 03:32

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Swap the integral order of quadratic integrals: ...
匿名用户 匿名用户 2021-08-28 18:59 数学类Mathematics

  • 2021-08-30 03:32

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Let r=√(x^2+y^2+z^2 ), find div├ (grad r)┤|((1,-2,2))
匿名用户 匿名用户 2021-08-28 18:58 数学类Mathematics

  • 2021-08-30 03:31

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The probability of failure for each product on an assembly line is p(0<p<1), each product is i
匿名用户 匿名用户 2021-08-28 18:58 数学类Mathematics

  • 2021-08-30 03:31

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