यदि (x^(2))/((x^(2) + a^(2)) (x^(2) + b^...

यदि `(x^(2))/((x^(2) + a^(2)) (x^(2) + b^(2)))=k ((a^(2))/(x^(2) + a^(2))- (b^(2))/(x^(2) + b^(2)))`, तो k=

`a^(2)-b^(2)`

`(1)/(a+b)`

`(1)/(a-b)`

`(1)/(a^(2)-b^(2))`

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