Differential equations Hyperbolic functions are useful in
Chapter 6, Problem 99(choose chapter or problem)
Differential equations Hyperbolic functions are useful in solving differential equations (Section 7.9). Show that the functions y = A sinh kx and y = B cosh kx, where A, B, and k are constants, satisfy the equation y_1x2 - k2y1x2 = 0.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer