(a) Show that vector adition is commutative but vector subtraction is non-commutative .
? (b) Find the cross product of two vectors.
`vecA=(2.0 hati+3.0 hatj+4 hatk) and vecB=(3.0hati-3.0 hatj-4 hatk)`.
(c) Find the unit vector of `(4 .0 hati -2.0 hatj-3hatk)`

Explanation

Let's solve the question step by step.

### (a) Show that vector addition is commutative but vector subtraction is non-commutative.

**Step 1: Define two vectors.**
Let:
\[
\vec{A} = 2.0 \hat{i} + 3.0 \hat{j} + 4.0 \hat{k}
...