Exercise
$\int_2^{\infty}\frac{1}{x^2+7x-8}dx$
Step-by-step Solution
Learn how to solve problems step by step online. Integrate the function 1/(x^2+7x+-8) from 2 to infinity. Rewrite the expression \frac{1}{x^2+7x-8} inside the integral in factored form. Rewrite the fraction \frac{1}{\left(x-1\right)\left(x+8\right)} in 2 simpler fractions using partial fraction decomposition. Expand the integral \int\left(\frac{1}{9\left(x-1\right)}+\frac{-1}{9\left(x+8\right)}\right)dx into 2 integrals using the sum rule for integrals, to then solve each integral separately. The integral \int\frac{1}{9\left(x-1\right)}dx results in: \frac{1}{9}\ln\left(x-1\right).
Integrate the function 1/(x^2+7x+-8) from 2 to infinity
Final answer to the exercise
The integral diverges.