How do i solve this on Matlab ?

2.3 (20 points) assume that a, b, c, and d are defined as follows, and calculate the results of the following operations if they are legal. If an operation is illegal, explain why it is illegal. 21], -13] [2 (a) result a+b; (b) result - a* d: (c) result- a.d (d) result ac; (e) result-ac (f) result - al b; (g) result = a-\ b; (h) result ab