i is defined as the square root of -1, (sqr(-1) or (-1)^(.5) )
A friend just asked me what 1/i is, so I punched it into the TI-89 and got -i. This would be great, except I can't get the algebra to do that.
i!=-i, so I decided to try it with 2/i
x=2 * sqr(-1)
Same result...I tried again for 3 and ended up with 3i. I don't see any errors in my algebra, but as far as I know, the TI-89 is infallible. I once saw it described as "a massive beast of knowledge" on these boards, and I agree. Would someone please enlighten me as to the nature of my error?