1.

निम्न फलन का अवकल गुणांक ज्ञात कीजिये -` sqrt(x^(2)+y^(2) )= log (x^(2) -y^(2) ) `

Answer» Correct Answer - ` ((x)/(y)) [(2sqrt(x^(2)+ y^(2))- (x^(2)-y^(2)))/(x^(2)-y^(2)+2sqrt(x^(2)+y^(2)))] `


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