Hey guys! I'm working on WW3 Problem 4 (it's a second order with constant coefficient homogeneous differential equation, its solution, y(t)'s value at 0 and its limit, and we're supposed to find c1 and c2). The only equation I find involving c1 and c2 is c1+c2=4, but when I try to imput y(t) with the values c1=2 and c2=2, it says my answer is wrong.

Does anyone know how to get the answer?