Use the definition of cross products to prove that for any vectors, a, b, c, a x (b + c) = (a x b) + (a x c) *the variables have a little arrow on top of them please show all work for this problem
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Originally Posted by Vileblood Use the definition of cross products to prove that for any vectors, a, b, c, a x (b + c) = (a x b) + (a x c) please show all work for this problem Why have you not shown any work whatsoever?
I don't know where to begin with this problem.
Originally Posted by Vileblood I don't know where to begin with this problem. Since the instructions say to use the definition of a cross product, I'd start there.
Originally Posted by Vileblood I don't know where to begin with this problem. Start with $\displaystyle a=<a_x,a_y,a_z>,~b=<b_x,b_y,b_z>,~\&~c=<c_x,c_y,c_ z>$. Then use the definitions to find $\displaystyle a\times b + a\times c$. Then try to unpack it to get $\displaystyle a\times(b+c)$.
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