Dive into the world of differential equations with this 30-minute video tutorial covering Section 9.1 of Stewart Calculus. Learn to solve various types of differential equations, including problems #5a, #5d, #6a, #6c, #6d, and #9 from the textbook. Explore key concepts and tackle challenging questions such as whether d^2y/dx^2 is always equal to (dy/dx)^2 and if y'*y" always equals y'''. Gain a solid foundation in this essential calculus topic through clear explanations and practical examples.