I need help with coding in MATLAB for this problem. The book is unclear about what the function should be for the fmincon MATLAB routine, and what the constraints are as well.

Using the MATLAB routine fmincon, find the minimum mass of a three-stage rocket, with the following exhaust velocities and structural coefficients, if the rocket is to have a payload of 1,000 kg and is to achieve a final velocity of 8.5 km/sec. c1=3,500 c2=3,800 c3=4,100 e1=0.10 e2=0.12 e3=0.09