# Question: find the general solution of the differential equation y4y11sec22t 0lttlt4...

###### Question details

Find the general
solution of the differential equation
*y*′′+4*y*=11sec2(2*t*),
0<*t*<*π*4.

Use *C*1,
*C*2,... for the constants of integration. Enter an exact
answer. Enter ln|*a*| as ln(|*a*|), and do not
simplify.