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[" 22.यदि "x=a(cos theta+theta sin theta...

[" 22.यदि "x=a(cos theta+theta sin theta),y=a(sin theta-theta cos theta)],[" है,तो सिद्ध कीजिए कि "(d^(2)x)/(d theta^(2))=a(cos theta-theta sin theta),],[(d^(2)y)/(d theta^(2))=a(sin theta+theta cos theta)" और "(d^(2)y)/(dx^(2))=(sec^(3)theta)/(a theta).]

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