- #1
anemone
Gold Member
MHB
POTW Director
- 3,883
- 115
Evaluate $\displaystyle\int\limits_0^{\infty} \dfrac{x^2+2}{x^6+1} \, dx$.
The purpose of the Integral Challenge is to evaluate the integral ∫0∞ (x²+2)/(x⁶+1) dx
and showcase the process of solving a challenging integral problem.
There are several techniques that can be used to solve this integral, including substitution, partial fractions, and contour integration. Each technique has its own advantages and may be more suitable depending on the specific problem at hand.
There is no one specific approach that should be followed when solving this integral. It is important to carefully analyze the integrand and choose a technique that best fits the problem. It may also be helpful to break the integral into smaller parts and apply different techniques to each part.
One way to check the correctness of your solution is to use a computer algebra system or integral calculator to evaluate the integral. You can also check your solution by taking the derivative of your answer and verifying that it matches the original integrand.
Yes, this integral can be used to calculate the expected value of a continuous random variable with a probability density function of (x²+2)/(x⁶+1)
. It can also be applied in engineering and physics problems involving power functions and harmonic oscillators.