$(a)\;\frac{1}{a} \bigg\{\frac{(ae^x+b)^{n+1}}{n+1}\bigg\}+c \qquad(b)\;\frac{1}{b} \bigg\{\frac{(ae^x+b)^{n+1}}{n+1}\bigg\}+c \qquad(c)\;\frac{1}{a} \bigg\{\frac{(ae^x+b)^{n}}{n}\bigg\}+c \qquad (d)\;\frac{1}{a} \bigg\{\frac{(be^x+a)^{n+1}}{n+1}\bigg\}+c$