Hi

Need help on the following questions:

1)

http://img202.imageshack.us/img202/8459/vector.jpg

Find the terms of a and b:

i)$\displaystyle \vec{OD}$

ii)$\displaystyle \vec{DC}$

iii)$\displaystyle \vec{DE}$

2)In the following case find the vector resolutes of the first vector parallel to and perpendicular to the second vector.

$\displaystyle a=2i-2j+k$

$\displaystyle b=i+j+4k$

P.S