$\displaystyle \int_1^4 g(x) dx = 5 $

and $\displaystyle \int_2^4 g(x) = 2 $

evulate (i) $\displaystyle \int_4^1 g(x) - \sqrt{x} dx $

and (ii) $\displaystyle \int_1^2 g(x) dx $

And also another qn. $\displaystyle \frac{d}{dx} ln \sin x $

thanks for the help.