## WeBWorK Problems

### vector problem request

by Zak Zarychta -
Number of replies: 3
Having perused the repositories for questions about vectors i see a lot of ijk style vector questions and a couple of vector questions related to the vector equation of planes in Cartesian form. eg

Find a vector  parallel to the intersection of the planes  and .

As i am in a bit of a pinch regarding time for development. I was wondering if anyone has developed (and is prepared to share with me) questions relating to the general vector form of;

equations for a lines in 2d of the form (please excuse the TeX)
\bm{l} = \vec{OA} + \lambda \vec{AB}

such as
\bm{l} =  <2,-1> + \lambda <2,4>

and planes in 3d
\bm{p} = \vec{OA} + \lambda \vec{AB} +  \mu \vec{AC}

such as
\bm{p} =  <4,2,0> + \lambda <-1,-1,1> +  \mu <0,-3,1>

### Re: vector problem request

by Davide Cervone -
There are a few problems on parametric lines in the Union library under the directory setMVlinesplanes. I don't think there are any on parametric planes, though (just implicit planes).

### Re: vector problem request

by Zak Zarychta -
That's great Davide it'll give me some material to work with, many thanks.
Zak