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differentiate w.r.t x: xsin¯¹x÷ (1-x²)   …

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differentiate w.r.t x:

xsin¯¹x÷ (1-x²)

 

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  • 1 answers

Rashmi Bajpayee 6 years, 9 months ago

Let {tex}y = {{x{{\sin }^{ - 1}}x} \over {1 - {x^2}}}{/tex}

=>     {tex}{{dy} \over {dx}} = {{\left( {1 - {x^2}} \right){d \over {dx}}\left( {x{{\sin }^{ - 1}}x} \right) - x{{\sin }^{ - 1}}x{d \over {dx}}\left( {1 - {x^2}} \right)} \over {{{\left( {1 - {x^2}} \right)}^2}}}{/tex}

=>     {tex}{{dy} \over {dx}} = {{\left( {1 - {x^2}} \right)\left[ {x.{1 \over {\sqrt {1 - {x^2}} }} + {{\sin }^{ - 1}}x.1} \right] + 2{x^2}{{\sin }^{ - 1}}x} \over {{{\left( {1 - {x^2}} \right)}^2}}}{/tex}

=>     {tex}{{dy} \over {dx}} = {{x\sqrt {1 - {x^2}} + \left( {1 - {x^2}} \right){{\sin }^{ - 1}}x + 2{x^2}{{\sin }^{ - 1}}x} \over {{{\left( {1 - {x^2}} \right)}^2}}}{/tex}

=>     {tex}{{dy} \over {dx}} = {{x\sqrt {1 - {x^2}} + {{\sin }^{ - 1}}x - {x^2}{{\sin }^{ - 1}}x + 2{x^2}{{\sin }^{ - 1}}x} \over {{{\left( {1 - {x^2}} \right)}^2}}}{/tex}

=>     {tex}{{dy} \over {dx}} = {{x\sqrt {1 - {x^2}} + {{\sin }^{ - 1}}x + {x^2}{{\sin }^{ - 1}}x} \over {{{\left( {1 - {x^2}} \right)}^2}}}{/tex}

=>     {tex}{{dy} \over {dx}} = {{x\sqrt {1 - {x^2}} + {{\sin }^{ - 1}}x\left( {1 + {x^2}} \right)} \over {{{\left( {1 - {x^2}} \right)}^2}}}{/tex}

 

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