Thread: How to show this?
View Single Post
  #2  
Old October 16th, 2008, 06:06 AM
mr fantastic's Avatar
mr fantastic mr fantastic is online now
Flow Master

  
Join Date: Dec 2007
Location: Zeitgeist
Posts: 12,241
Country:
Thanks: 2,576
Thanked 4,763 Times in 4,195 Posts
mr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond reputemr fantastic has a reputation beyond repute
Default
Quote:
Originally Posted by tintti View Post
Okey, my homework is to show/prove that
arcsin(-x) = -arcsinx! I can see it from unit circle but I dont know how to make a nice formula.

thnx
arcsin(-x) = A

=> sin A = -x => - sin A = x => sin (-A) = x => arcsin(x) = -A

=> -arcsin(x) = A.

Therefore arcsin(-x) = -arcsin(x)
__________________
There are two things you should never try to prove: the impossible and the obvious.

The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low and achieving our mark. (Michelangelo Buonarroti)

  • To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

  • To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

  • To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

  • To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

  • To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
The following users thank mr fantastic for this useful post:
Donate to MHF