1.

`(cos sqrtx)/(sqrtx)`

Answer» `int(cos sqrtx)/(sqrtx)dx" माना "sqrtx=t`
`=intcost-2dt" "rArr (1)/(2sqrtx)dx=dt`
`=2 sin t+c" "rArr (1)/(sqrtx)dx=2dt` ltbgt `=2sin sqrtx+c`


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