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If y=((a x+b))/((x^2+c)) , then show tha...

If `y=((a x+b))/((x^2+c))` , then show that `(2x y y ')y^=3(x y^+y^(prime))y^ ,` where `a , b , c` are constants and dashes denote differentiation w.r.t. `xdot`

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