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" 3.If "cos^(-1)((x^(2)-y^(2))/(x^(2)+y^...

" 3.If "cos^(-1)((x^(2)-y^(2))/(x^(2)+y^(2)))=tan^(-1)a," then prove that "(dy)/(dx)=(y)/(x)

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If cos^(-1)((x^(2)-y^(2))/(x^(2)+y^(2)))=tan^(-1)a, prove that (dy)/(dx)=(y)/(x)

If cos^(-1)((x^(2)-y^(2))/(x^(2)+y^(2)))=tan^(-1)a, prove that (dy)/(dx)=(y)/(x)

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