InterviewSolution
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यदि `y=cos^(-1)x` है, तो `(d^(2)y)/(dx^(2))` को केवल y के पदों में ज्ञात कीजिए । |
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Answer» `y=cos^(-1) rArr x=cosy` `rArr" "(dy)/(dx)=-siny` `rArr" "(dy)/(dx)=-(1)/(siny)=-"cosec"y` `rArr" "(d^(2)y)/(dx^(2))=(d)/(dx)(-"cosec y")` `" "=-"cosec"^(2)y cot y` |
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