Have some confidence, yes its correct.
Bobak
This is the question i'm stuck on:
a-|a-|a|| Rewrite this expression without absolute value signs, treating various cases separately where necessary.
a-|a-|a||
When a is negative (ie. a=-k);
-k-|-k-k|
-k-|-2k|
-k-2k=-3k=3a
When a is positive (ie.a=k)
k-|k-|k||
k-|k-k|
k-0=k=a
So when a is negative the expression is just 3a.
When a is positive the expression is a.
I just wanted to know if that's correct. The question before it was a lot more complicated, this one seems too easy to be true.....