Feynman Integration Example 145 - ∫ from 0 to ∞ of ln\left(\frac{a^{2}+x^{2}}{b^{2}+x^{2}}\right) dx

Finding a closed form expression for ∫ from 0 to ∞ of ln\left(\frac{a^{2}+x^{2}}{b^{2}+x^{2}}
ight) dx using Feynman integration.