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(i) यदि f(x) = x^(2) (1 + (1)/(x^(2))), ...

(i) यदि `f(x) = x^(2) (1 + (1)/(x^(2)))`, तो सिध्द कीजिए कि `f(cot theta) = "cosec"^(2) theta`
(ii) यदि `f(x) = x^(2) - (1)/(x^(2))`, हो, तो सिध्द कीजिए कि `f(x) + f((1)/(x)) = 0`

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