1.

`int(dx)/(sqrt(x+1)+sqrt(x+2)) = (2)/(3)[(x+2)^(3//2)-(x+1)^(3//2)]+c` सिद्ध कीजिये -

Answer» बाया पक्ष ` = int(dx)/(sqrt(x+1)+sqrt(x+2))`
`= int(dx)/(sqrt(x+2)+sqrt(x+1))`
`= int{(1)/(sqrt(x+2)+sqrt(x+1)).(sqrt(x+2)-sqrt(x+1))/(sqrt(x+2) - sqrt(x+1))}dx`
`=int(sqrt(x+2)- sqrt(x+1))/(x+2-x-1)dx`
`=int(sqrt(x+2)-sqrt(x+1))/(1)dx`
`=int(x+2)^(1//2)dx -int(x+1)^(1//2)dx`
` =(2)/(3)(x+2)^(3//2)- (2)/(3)(x+1)^(3//2)+c`
` = (2)/(3)[(x+2)^(3//2)-(x+1)^(3//2)]+c`= दाया पक्ष


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