If p q is true, which compound statement has the same truth value? p+q is false and qp is true.
p+q is false and q + p is false.
p + q is true and q + p is false.
p + q is true and q + p is true.

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).