Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/y-root-sinx-root-sinx-root-sinx-prove-that-dy-dx-cosx/continuity-and-differentiability/10041201
Regards
https://www.meritnation.com/ask-answer/question/y-root-sinx-root-sinx-root-sinx-prove-that-dy-dx-cosx/continuity-and-differentiability/10041201
Regards