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यदि ` y= sqrt (sinx +sqrt(sin x +sqrt sin x +......))` तब सिद्ध कीजिए की `(dy)/(dx) =(cos x )/(2y-1) `

Answer» `because " "ysqrt (sinx +sqrt sin x +sqrt(sinx +sqrt...+infty))`
` " "= sqrt (sinx +y)`
` " "(because y= sqrt (sin x + sqrtsin x + sqrt(sin x +sqrt ...+infty ) ))`
` " "therefore y^(2) =sinx +y`
दोनों पक्षों का x के सापेक्ष अवकलन करने पर,
` " "2y(dy)/(dx) =(d)/(dx) sin x + (dy)/(dx) `
` rArr" "(2y -1) (dy)/(dx)=cos x `
` therefore " "(dy)/(dx) =(cos x )/(2y-1) `


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