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Some thing wrong right here .... []1= -(-1)1= -[(-1)²]½
Quote from: myriam on 15/05/2010 11:40:34Some thing wrong right here .... []1= -(-1)1= -[(-1)²]½Since [(-1)²]½=(1)½=1, line 2 doesn't follow from line 1.
1= -(-1)1= -[(-1)²]½1= -(1)½1=-√11=-1[/b]
1= -(-1)1= -[(-1)²]½
ok, where is the theorem telling that i can't write 1= -[(-1)²]½ ??
Quote from: myriam on 17/05/2010 20:53:57ok, where is the theorem telling that i can't write 1= -[(-1)²]½ ??No theoerm required. You are substituting something that is not equal to -1. Show me how you get from my line 2 to your line 2.