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mkx2000 · 2009 May 22nd, 09:27 PM

Well, the scalar product of orthogonal vectors is 0, so (B) it is.

(1,m)x(1,-1/m) = 0

If in doubt, just draw a chart for some value of m.

2009 May 22nd, 09:27 PM	#9 (permalink)
mkx2000 I JUST got here. Join Date: May 2009 Posts: 26	Well, the scalar product of orthogonal vectors is 0, so (B) it is. (1,m)x(1,-1/m) = 0 If in doubt, just draw a chart for some value of m.