Damped Oscillations & Sequences

1) Spring of mass 1kg and its damping constant c = 10. The spring starts from it equilibrium position with a velocity of 1 m/s. graph the position function for the following values of the spring constant k: 10,20,25,30,40. What type of damping occurs in each case?

so m = 1kg, c =10, x(0) = 0 and x'(0) = 1

1r^2 + 10r + kx = 0.

do i calculate each one by using the given k values? is it necessary to use 10 pages?

2)Can someone show me how to figure out the formula mathematically?

{5,1,5,1,5,1...}