u (3,-1,4) v (5,2,-1) w (8,1,-2) Evaluate each expression l u x v l squared + (w dot w) l u x v l squared -lvl squared lul squared
Last edited by peon123; May 24th 2009 at 02:10 PM.
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Originally Posted by peon123 u (3,-1,4) v (05,2,-1) w (8,1,-2) Evaluate each expression l u x v l squared + (w dot w) l u x v l squared -lvl squared lul squared What part or parts do you have trouble doing? These are rather simple.
is l u x v l squared same thing as ( lul x lvl) squared? so just multiply the magnitudes and square them?
Originally Posted by peon123 is l u x v l squared same thing as ( lul x lvl) squared? so just multiply the magnitudes and square them? is the cross product of the vectors. Find that product then its length.
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