Choose the correct answer . Which of the following differential equation has `y = c_1e^x + c_2e^(-x)` as the general solution ?

Options

A. ((d^2 y)/(d x^2))+y=0'
B. ((d^2 y)/(d x^2))-y=0'
C. ((d^2 y)/(d x^2))+1=0'
D. ((d^2 y)/(d x^2))-1=0'

Answer

B