show that the following statement is false by providing a counterexample.
The expression(-a) is always less than (a).
2006-10-09 07:31:17 · 5 answers · asked by Marquesha M 1 in Education & Reference ➔ Other - Education
lol were lerning this in skooooo
-a>a
if -a is less than a, then a is greater than -a
2006-10-09 07:35:50 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The counterexample is any number less than zero:
if a = -1, then (-a) = 1
2006-10-09 07:41:30 · answer #2 · answered by Computer Guy 7 · 0⤊ 0⤋
omg!! im learning this stuff too, its rele confusing but once you get it, its easy. a counter example could be (i think, not sure) somethin like unless -a stands for a positive number and a stands for a negative number. like if -a was 4 and a was -4, then -a would be greater than a which is -4.
2006-10-09 07:41:24 · answer #3 · answered by LoLa 3 · 0⤊ 0⤋
I think this might work...
If "a" is a negitive number like -3 then it would state - -3 which would equal a postive. therefor "a" would be equal to -3
you can put any number in though
2006-10-09 07:36:56 · answer #4 · answered by sweetandsexy2009 1 · 0⤊ 0⤋
(-4) < 4
(-100) < 100
any negative number is alway less than the same postive number
2006-10-09 07:41:37 · answer #5 · answered by tabbaco1980 2 · 0⤊ 0⤋