Verify that the given function y is a solution of the differential equation that follows it. ASsume that C is an arbitrary constant. y(t) = C, sin 12t + C2 cos 12t; y"(t) + 144y(t) = 0 Start by substituting y(t) = C, sin 12t + C2 cos 12t into the second term of y"(t) + 144y(t) = 0. y' (t) + = 0