Find the definite integrals.

a$){\displaystyle \underset{-1}{\overset{1}{}}}(3x^2-\frac{4}{3}x-3)dx$

b$){\displaystyle \underset{\frac{}{2}}{\overset{\frac{}{4}}{}}}cotxcs{c}^{2}xdx$

c$){\displaystyle \underset{e}{\overset{e^2}{}}}\frac{1}{xln(x^3)}dx$

d$){\displaystyle \underset{1}{\overset{5}{}}}(e^{7x}+x^2)dx$