Question

[Pham Trong Bach]

Tìm nguyên hàm của hàm số  $f\left(x\right)=\frac{7^{x+1}}{8^x}$.

A.  $\int f\left(x\right)dx=\frac{7}{\ln {\displaystyle \frac{7}{8}}}.{\left(\frac{7}{8}\right)}^{-x}+C$

B.  $\int f\left(x\right)dx=\frac{8}{\ln {\displaystyle \frac{7}{8}}}.{\left(\frac{7}{8}\right)}^{-x}+C$

C.  $\int f\left(x\right)dx=\frac{7}{\ln {\displaystyle \frac{7}{8}}}.{\left(\frac{7}{8}\right)}^x+C$

D.  $\int f\left(x\right)dx=\frac{8}{\ln {\displaystyle \frac{7}{8}}}.{\left(\frac{7}{8}\right)}^x+C$

Answer 1

[Cao Minh Tâm]

Chọn C