y = c1 cos(5x) + c2 sin(5x) is a two-parameter family ofsolutions of the second-order DE y'' + 25y = 0. If possible, find asolution of the differential equation that satisfies the given sideconditions. The conditions specified at two different points arecalled boundary conditions. (If not possible, enterIMPOSSIBLE.)
y(0) = 1, y'(?) = 7
y =
