clear;
clc;

// Example: 9.21
// Page: 373

printf("Example: 9.21 - Page: 373\n\n");

// Mathematics is involved in proving but just that no numerical computations are involved.
// For prove refer to this example 9.21 on page number 373 of the book.

printf(" Mathematics is involved in proving but just that no numerical computations are involved.\n\n");
printf(" For prove refer to this example 9.21 on page 373 of the book.");