1.

फलनों का समाकलन कीजिए - `(1)/(x^(2)+x+1)`

Answer» Correct Answer - `(2)/(sqrt3)tan^(-1)((2x+1)/(sqrt3))`
`int(1)/(x^(2)+x+1)dx=int(dx)/((x+(1)/(2))^(2)((sqrt3)/(2))^(2))=(1)/(sqrt3)tan^(-1)((x+(1)/(2))/((sqrt3)/(2)))`


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