1.

यदि ` y= log sec (ax+b )^(3)`तब `(dy)/(dx) ` का मान ज्ञात कीजिए|

Answer» Correct Answer - `3(ax+b) ^(2) tan (ax+_b)^(3) `
माना ` " "sec (ax+ b )^(3) =t `
` rArr 3a (ax+b ) ^(2) *sec (ax+b ) ^(3) *tan (ax+ b) ^(3) dx =dt `
` rArr " "(dt)/(dx) =3a (ax+b ) ^(2) tan (ax+b) ^(2) sec (ax+b ) ^(3)`
` " "(dy)/(dx) =(d)/(dt)(logt ) *(dt)/(dx) ` का प्रयोग करने पर


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