Find all integer solutions of the equation a)3x+2y=1

b)4x+10y=9

c)7x+23y=25

d)x^2−4y^2=17

All in terms of t

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).