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Complex Number Question (Easy)
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[QUOTE="David Donald, post: 5466123, member: 568877"] [h2]Homework Statement [/h2] Verify that i[SUP]2[/SUP]=-1 using (a+bi)(c+di) = (ac-bd)(ad+bc)i [h2]Homework Equations[/h2] (a+bi)(c+di) = (ac-bd)(ad+bc)i [h2]The Attempt at a Solution[/h2] I tried choosing coefficients so that it would be (i)(i) = (0 - 1)+(0+0)i = -1 so then I get i^2 = -1 But I was told that this was wrong and to try again... Can anyone explain what I did was wrong or if theirs a smarter way to verify? [/QUOTE]
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Complex Number Question (Easy)
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