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[" 17.If "y=(ax^(2))/(x-a)(bx)/(x-b)time...

[" 17.If "y=(ax^(2))/(x-a)(bx)/(x-b)times(c)/(x-c)+(bx)/(x-b times-c)+(c)/(x-c)+1" ,then prove that "],[qquad x(dy)/(dx)=y[(a)/(a)+(b)/(b)+(c)/(c)]]

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