$($A$)$ In Problems $13-30,$ find $f^{\text{'}}(x).$

$13.f(x)=5e^{x}3x1$

$14.f(x)=-7e^x-2x5$

$15.f(x)=-2lnx{x}^2-4$

$16.f(x)=6lnx-x^{3}2$

$17.f(x)=x^3-6e^x$

$18.f(x)=9e^{x}2x^2$

$19.f(x)=e^{x}x-lnx$

$20.f(x)=lnx2e^x-3x^2$

$21.f(x)=ln{x}^3$

$22.f(x)=ln{x}^8$

$23.f(x)=5x-ln{x}^5$

$24.f(x)=4ln{x}^9$