Question

If $f(x)=\frac{7^{1+\log x}}{x^{\log 7}}$ then $f(2021)=$

• A. 2021
• B. 100
• C. 7
• D. 1

Answer 1

Answer: (C)

$f(x)=\frac{7^{1+\log x}}{x^{\log 7}}$
$=\frac{7.7^{\log x}}{7^{\log x}}$
$=7$