Calculus 3:

12.4Crossproduct: Show Work

1. If v=13,1,12 and w=4,6,6, then

vw=

2. (i+2j+3k)(i+k)=

3. Calculate the cross product assuming that uw=3,6,5

(4u+2w)w= , ,

4. Let v=3,4,1

Calculate:

vi= , , vj= , , vk= , ,

5. Sketch the triangle with vertices O,P=(0,7,3) and Q=(4,0,7) and compute its area using cross products.

Area=