I concur.Originally posted by Chirone
it's been a while but at a guess, can you comfirm my interpretation of your notation?
|x| is the absolute value of x yes?
then i say...
assuming |x| is the absolute value of x (that is, x will always be positive)
then in that case if x >= 0 then x = |x|
therefore
y = |x| is the same as y = x, x >= 0
because you can't have a negative number if it's absolute
therefore
y = |x| is the same as y = x
if you're asking why it will always be positive then you could probably solve it by proof by induction... or proof by contradiction
But it's not - that's your mistake...Originally posted by Chirone
...
then in that case if x >= 0 then x = |x|
therefore
y = |x| is the same as y = x, x >= 0
...
Hey!.... I ain't sharing!Originally posted by BennyK
Thanks anyway Go join Mayaniac and his pipe
That's OK, I'll share my pipe with youOriginally posted by stwert
...I'm not really a math person...