Solving a Tricky Trigonometric Integral with Substitution and Symmetry

In this video, we tackle a fascinating integral involving trigonometric and exponential functions. Learn how to evaluate the integral of cosine of x divided by 1 plus e to the power of x, from negative pi over 2 to pi over 2, using symmetry and substitution techniques. Along the way, we generalize the result for even functions, providing a powerful tool for similar integrals. Perfect for students and enthusiasts who want to deepen their understanding of integration techniques. Don’t forget to like and subscribe for more problem-solving videos!