## Vector Product

Given two vectors the vector product and its magnitude are calculated.

The vector product is a vector orthogonal to the parallelogram which is put up
by the given vectors. Its magnitude is equal to the area of the parallelogram.

### Example:

-> | 1 | -> | 7 |
a = | 2 | b = | 1 |
| 3 | | 4 |
-> -> | 5 | -> ->
a x b = | 17 | |a x b|= 21,977261
|-13 |

### See also:

Wikipedia: Cross product