Question: (a) Find \(\int{\left( {{x}^{2}}+{{x}^{1/2}}+\sin x \right)dx}\)

(b) Find \(\int{\left( {{x}^{2}}+1 \right)}{{\left( 6{{x}^{3}}+18x \right)}^{3}}dx\)

(c) Find \(-\int{{{\sin }^{4}}x{{\cos }^{4}}dx}\)

(d) Evaluate \(\int\limits_{0}^{4}{\frac{2x}{{{\left( {{x}^{2}}+9 \right)}^{3/2}}}}dx\)