Can anyone help me find the equation that goes through these 12 points: (-.75,0,) ...(-.5, -.7906) ....(0,0) ..... (.25, .90461),.... (.5, .94868) ....(.75, 0) ...(1, -1.039),... (1.25, -1.088) ...(1.5,0).... (1.75, 1.1915) .....(2,1.2471) and (2.25, 0) it basically looks like this one on this website right before "forced vibrations with damping" : http://www.ltcconline.net/greenl/courses/204/appsHigherOrder/forcedVibrations.htm

Question

Can anyone help me find the equation that goes through these 12 points: (-.75,0,) ...(-.5, -.7906) ....(0,0) ..... (.25, .90461),.... (.5, .94868) ....(.75, 0) ...(1, -1.039),... (1.25, -1.088) ...(1.5,0).... (1.75, 1.1915) .....(2,1.2471) and (2.25, 0)      it basically looks like this one on this website right before "forced vibrations with damping" : http://www.ltcconline.net/greenl/courses/204/appsHigherOrder/forcedVibrations.htm