${\displaystyle \underset{c}{\overset{\phantom{}}{}}}[(xy+2)+j(xy-2)]dz$

$C_1$ line between $(0,1)$

and $(3,-1)$

$Hu(2)$:$-{\displaystyle \underset{C}{\overset{\phantom{}}{}}}{z}^{2}dz$

$c_2$:$y=x^2+3,(0,3)(1,4)$

hints $\frac{1}{3}=({\displaystyle \underset{(0{)}^c}{\overset{\phantom{}}{}}},3$

You can say wecande

$x=\sqrt[\phantom{2}]{y-3}$ this

$\frac{dy}{dx}=2x$

$dy=2xdx$

$dx=\frac{dy}{2x}$