Mathematics is a "doing" subject. Write down the problem from the PDF, try to solve it yourself, and use the "repack" solution only when you get stuck.
Formation of PDEs by eliminating arbitrary constants/functions, and solving standard types of first and higher-order linear PDEs. Unit II: Fourier Series: Mathematics is a "doing" subject
Integrating both sides, we get:
: Each problem is presented with simple yet exact explanations to help students develop the ability to apply concepts properly. Graded Exercises try to solve it yourself