- #1
cptcook
- 5
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Homework Statement
Let s and t be scalars. show that u, v and su + tv are coplanar.
u and v are arbitrary vectors,
Homework Equations
The Attempt at a Solution
Well, i suppose if they are coplanar, triple scalar product of them should be 0, right? and su+tv is evidently a linear combination of u and v. but i got a little confused when vectors are arbitrary and not really sure how to show it properly. any help would be appreciated, thanks.