# Vector cross product with coefficients

1. Oct 1, 2012

### Stickybees

Anyone know how would I simplify a cross product where the two vectors have coefficients? For example $(x/(y^3))\bar{r}$ X $(x/(y))\bar{L}$

Thanks!

2. Oct 1, 2012

### Muphrid

Just pull the coefficients out.

3. Oct 1, 2012

### HallsofIvy

In other words, $(a\vec{u})\times(b\vec{v})= ab (\vec{u}\times \vec{b})$.