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dy/dx का मान ज्ञात कीजिये यदि (i) x=sqrt...

dy/dx का मान ज्ञात कीजिये यदि (i) `x=sqrt(1+t^(2))y=sqrt(1-t^(2))`
(ii) `x=t+(1)/(t),y=t-(1)/(t)`

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