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यदि (If) x=asin2t(1+cos2t) तथा (and) y=b...

यदि (If) `x=asin2t(1+cos2t)` तथा (and) `y=bcos2t(1-cos2t)`, दिखाएँ कि (show that ) `((dy)/(dx))_(t=(pi)/(4))=(b)/(a)`

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