please help me with this matlab problem

By solving manually by hand and using MTLAB, use the following equation: v=cmg(1e(c/m)t) to compute velocity, analytically, for the first 15s. Use a mass of 70Kg, gravitational acceleration and of 9.81m/s2, and a drag coefficient of 0.25kg/m. Then, perform the same computation, numerically, with the same givens but by using the following equation: v(ti+1)=v(ti)+[gmcdv(ti)2](ti+1ti) to compute the velocity with Euler's method. Employ a step size of 1s for the calculation. Make a table from three columns; the first one includes the time values from 1 to 15 with a step size of 1s, the second column is the analytical values, and the final column is the numerical values. Then plot the two curves (the analytical and numerical results) in one figure. What is your conclusion about the comparison with respect to the step size