# Vectors

• August 7th 2013, 09:11 AM
Kristen111111111111111111
Vectors
(alpha)x + a × x = b
Here a , b and x are vectors and alpha is a scalar

I need a solution for x
• August 8th 2013, 02:30 PM
BobP
Re: Vectors
Take the scalar multiple of your equation, (call it eq(1)), with $\underline{a},$ and note that the triple scalar product is zero. Call this eq(2).

Take the vector multiple of eq(1) with $\underline{a},$ expand the triple vector product and substitute using eq(2). Call this eq(3).

Eliminate the vector product between eq's (1) and (3), and solve for $\underline{x}.$
• August 9th 2013, 06:54 PM
Kristen111111111111111111
Re: Vectors
Thank you so much for ypur help I got the answer :)