ares25 Messages 5 Reaction score 0 Thread starter Apr 17, 2014 #1 ignore Sorry for the post. I'll take it down soon. Thanks for the help Last edited: Apr 17, 2014
jbunniii Homework Helper Insights Author Messages 3,488 Reaction score 257 Apr 17, 2014 #2 Use the triangle inequality in this form: $$||u|-|v|| \leq |u-v|$$ with ##u = f(x) - x## and ##v = f(y) - y##.
Use the triangle inequality in this form: $$||u|-|v|| \leq |u-v|$$ with ##u = f(x) - x## and ##v = f(y) - y##.