Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#1 2007-11-19 09:12:59
- tony123
- Member
- Registered: 2007-08-03
- Posts: 229
simplify
simplify
Last edited by tony123 (2007-11-19 09:13:42)
Offline
#2 2007-11-19 12:10:07
- mikau
- Member
- Registered: 2005-08-22
- Posts: 1,504
Re: simplify
uh.. what kind of simplification do we want? One way is summation
∑ tan(2^n)/cos(2^n+1) from n = 0 to 7.
A logarithm is just a misspelled algorithm.
Offline
#3 2007-11-19 13:26:21
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: simplify
I think when he said "simplify", he meant "evaluate".
Why did the vector cross the road?
It wanted to be normal.
Offline
#4 2007-11-19 13:45:53
- mikau
- Member
- Registered: 2005-08-22
- Posts: 1,504
Re: simplify
What? I'd rather stick my head in a blender!
A logarithm is just a misspelled algorithm.
Offline
#5 2007-11-19 15:11:43
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: simplify
I would love to evaluate it as I would similar problems posed by Tony they stimulate the creativity cells in my brain. Unfortunately, I do not always have time for these problems. 
Offline
#6 2007-11-20 10:41:41
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: simplify
Probably not at all helpful, but by messing around with various identities I managed to get that
Why did the vector cross the road?
It wanted to be normal.
Offline
#7 2007-11-20 17:11:28
- George,Y
- Member
- Registered: 2006-03-12
- Posts: 1,379
Re: simplify
X'(y-Xβ)=0
Offline
#8 2007-11-21 01:43:01
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: simplify
Wait, wait
So
Hence
Are we getting closer? 
Last edited by JaneFairfax (2007-11-21 02:08:02)
Offline
#9 2007-12-19 13:53:38
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: simplify
GRRR!!! 
So the answer is tan(256°) − tan(1°).
Offline
#10 2007-12-20 02:31:55
- Krizalid
- Member
- Registered: 2007-03-09
- Posts: 51
Re: simplify
You'll get quickly the desired.
Offline