Linear and nonlinear optimization

1) Define the different between linear and nonlinear optimization with example each? (6 marks) Answer: 2) A- How to calculate forecast error? (1 mark) Answer: B- Calculate forecast error for December? (1 mark) Month Sales Forecast Error September 5500 3000 --------- October 7200 4150 --------- November 8600 9100 --------- December 9300 7900 Answer: 3) A- How to calculate forecast weighted moving average? (1 mark) Answer: B- Apply forecast weighted moving average formula for week 2. (1 mark) (n = 2, W1 = 0.5, W2 = 0.8) Week Demand 1 7000 2 4000 3 3000 4 5000