To take advantage of the characteristic solutions and , you can try the method of variation of parameters, where we look for a solution of the form
with the condition that
Then
Substituting into the ODE gives
Since
the above reduces to
and form a linear system that we can solve for using Cramer's rule:
where is the Wronskian determinant of the fundamental system and is the same determinant, but with the -th column replaced with .
So we have
Then the particular solution is
giving the general solution to the ODE,
The length of the sign in centimeters is 50 while in millimeters it is 500 because....
1 cm = 10 mm
so then it would be
6. 16-4=12 divided by 2 equals 6 ;)