Can anybody please tell me if there is a mistake in this proof and where it is?
The proof is here: http://img514.imageshack.us/img514/200/eqhg2.png
2007-06-16 13:15:13 · 6 answers · asked by Sticky 2 in Science & Mathematics ➔ Mathematics
The mistake is changing sq rt (1/-1) to sq rt (-1/1) because it's really 1/i that you changed to i/1 which is not the same thing.
2007-06-16 13:20:18 · answer #1 · answered by richardwptljc 6 · 0⤊ 0⤋
The mistake is in step (3),
The +/- sign should apply to both the numerator and denominator of the term, making it a plus of minus 1 on the top (numerator).
2007-06-16 20:22:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Statement 2 is incorrect. i is defined as the positive sqrt of -1.
2007-06-16 20:21:40 · answer #3 · answered by cattbarf 7 · 0⤊ 0⤋
i=+sqrt(-1)
-i=-sqrt(-1)
i is not equal to +-sqrt(-1).
There's the first mistake in the proof.
2007-06-16 20:33:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
square of (-1) is 1 and square of (1) is 1. so... how can i-squared be -1?
2007-06-16 20:25:00 · answer #5 · answered by MilkDonkey 3 · 0⤊ 0⤋
in part 2 there is no proof that i = +/- i.
It is true that i=+i, but there is no proof that i= -i
2007-06-16 20:22:44 · answer #6 · answered by ignoramus_the_great 7 · 0⤊ 0⤋