1.

`intx sin^(3)x^(2).cosx^(2)dx` का मान ज्ञात कीजिए ।

Answer» माना `I=intx sin^(3)x^(2).cosx^(2)dx`
`" "=int(sinx^(2))^(3).(xcosx^(2))dx`
माना `" "sinx^(2)=t`
`rArr" "2x.cosx^(2)=(dt)/(dx)`
`rArr" "x.cosx^(2)dx=(dt)/(2)`
अब `" "I=int t^(3).(dt)/(2)=(1)/(8)t^(4)+c`
`" "=(1)/(8)sin^(4)x^(2)+c`


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