Question

$\int 7^{7^{7^x}}\cdot 7^{7^x}\cdot 7^{x}dx=$

• A. $\frac{7^{77x}}{{\left(log7\right)}^3}+c$
• B. $\frac{7^{77x}}{{\left(log7\right)}^2}+c$
• C. $7^{77x}\cdot {\left(log7\right)}^3+c$
• D. $7^{7^{7^x}}$

Answer 1

Answer: (A)

Correct answer is (a) $\frac{7^{77x}}{{\left(log7\right)}^3}+c$