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Let two points P and Q lie on the hyperb...

Let two points P and Q lie on the hyperbola `(x^(2))/(a^(2))-(y^(2))/(b^(2))=1`,
whose centre C be such that CP is perpendicular to CQ,
a lt b. Then the value of `(1)/(CP^(2))+(1)/(CQ^(2))` is

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