cathgirl Posted May 26, 2004 Share Posted May 26, 2004 Help Link to comment Share on other sites More sharing options...
Colleen Posted May 26, 2004 Share Posted May 26, 2004 What's the problem? Link to comment Share on other sites More sharing options...
Banksey Posted May 26, 2004 Share Posted May 26, 2004 umm not sure i can help but whats the prob? Link to comment Share on other sites More sharing options...
cathgirl Posted May 26, 2004 Author Share Posted May 26, 2004 (edited) Well, ONE (grrr... I have a ton) is 1 log6(5-3a) = log6(a2-5) (the 6's are little and the a is squared..does that make sense, I can't do sub/superscript on posts) do the log6 cancel each other out? Edited May 26, 2004 by cathgirl Link to comment Share on other sites More sharing options...
Colleen Posted May 26, 2004 Share Posted May 26, 2004 1 log6(5-3a) = log6(a2-f) Grrr. I hated those. Well, I can't really remember exactly. I never really understood those. It didn't help that our teacher had a really thick accent. I think you're right though. They do cancel out. Oh, somebody who's good at math help! Link to comment Share on other sites More sharing options...
Thy Geekdom Come Posted May 26, 2004 Share Posted May 26, 2004 I'm good at math...but it's been a long time...I do believe that they cancel out. Link to comment Share on other sites More sharing options...
cathgirl Posted May 26, 2004 Author Share Posted May 26, 2004 Problem # 2 (pple still help w/ the first one please!!! ) Find the area of a triangle with the vertices (0,9), (4,6), and (-1, 12) This uses matrices, this is what I have so far [ 0 4 -1 ] [9 6 12 ] + ????? = I don't know how to get the second one, all I know, is that it is all the same number... :ph34r: Link to comment Share on other sites More sharing options...
cathgirl Posted May 26, 2004 Author Share Posted May 26, 2004 [quote name='Raphael' date='May 25 2004, 09:46 PM'] I'm good at math...but it's been a long time...I do believe that they cancel out. [/quote] Thanks! You too Colleen!! Link to comment Share on other sites More sharing options...
Thy Geekdom Come Posted May 26, 2004 Share Posted May 26, 2004 Hehe...you don't need to use matrices for this...hehe... Graphing Calculator to the rescue! Link to comment Share on other sites More sharing options...
Moosey Posted May 26, 2004 Share Posted May 26, 2004 I like math Link to comment Share on other sites More sharing options...
cathgirl Posted May 26, 2004 Author Share Posted May 26, 2004 [quote name='Raphael' date='May 25 2004, 09:48 PM'] Hehe...you don't need to use matrices for this...hehe... Graphing Calculator to the rescue! [/quote] That's what the teacher told us to do...it says to use them!!! Link to comment Share on other sites More sharing options...
ilovechrist Posted May 26, 2004 Share Posted May 26, 2004 this is why i'm behind in Math. i take my time (something that's hard for me to do), and i work on them for hours.... boo. wish i could help, but i did 3 Geometry exercises today, and i'm wiped. Link to comment Share on other sites More sharing options...
Thy Geekdom Come Posted May 26, 2004 Share Posted May 26, 2004 Okay...it's been over a year...I don't remember how to do triangle matrices and am trying to remember the trig... Link to comment Share on other sites More sharing options...
RandomProddy Posted May 26, 2004 Share Posted May 26, 2004 [quote name='cathgirl' date='May 26 2004, 03:38 AM'] Well, ONE (grrr... I have a ton) is 1 log6(5-3a) = log6(a2-f) (the 6's are little and the a is squared..does that make sense, I can't do sub/superscript on posts) do the log6 cancel each other out? [/quote] The logs cancel by putting the whole thing to an exponent of 6. 1 log6(5-3a) = log6(a2-f) 6^(log6(5-3a)) = 6^(log6((a^2)-f) 5-3a = a^2 - f a^2 +3a - (5+f) = 0 Link to comment Share on other sites More sharing options...
Thy Geekdom Come Posted May 26, 2004 Share Posted May 26, 2004 [quote] That's what the teacher told us to do...it says to use them!!![/quote] Then it's time to download a vector calculation program! Link to comment Share on other sites More sharing options...
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