What is the antiderivative of 7/x?

1 Answer
Feb 29, 2016

\int \frac{7}{x}dx = 7 ln|x| + C

Explanation:

\int \frac{7}{x}dx

Taking the constant out as: \int a\cdot f(x)dx=a\cdot \int f(x)dx

=7\int \frac{1}{x}dx

Using the common integral as: \int \frac{1}{x}dx=\ln (|x|)

=7\ln |x|

Adding constant to the solution,

=7\ln |x| + C