100000 GPa/m 0 0 GPa/m 20000 GPa/m 0 0 GPa/m 0 mm 1 0 0 0 mm 0 1 0 0 mm 0 0 1 -7.726*((1-cos(pi*t/.75))/2) 0 1 0 0 mm -z 0 x