MfM Math Discussion, Help & Advice

[ilyace]

You don't know how to graph an inequality?

I know algebra, but I am really stuck on all the logs and stuff.

What don't you get, maybe we can help you out with logarithms.

 

[Sullivan]

I just don't know how to convert the stuff I have now to the translation and inequality, I know how to graph, just don't know how to get from point a to point b.

 

[ilyace]

Post your data and I'll check it out.

 

[SpiderJames]

can anyone do this one? It was a test question i got wrong, everyone Ive talked to said it cant be solved.

 

[Sullivan]

can anyone do this one? It was a test question i got wrong, everyone Ive talked to said it cant be solved.

You got to be kidding right?

You need to use the 30-30-90 formula and such.

I don't know if you are being serious or not. :blushing:

 

[SpiderJames]

We dont know if its a 30-60-90 triangle, the problem is exactly how it was on the test.

 

[ServerPlague]

It could be done with a warping of the sine rule.

 

[Moose]

Is it Soh Cah Toa?

 

[Hardrive]

Is it Soh Cah Toa?

There aren't any provided angle measures besides 90's, so I doubt it.

 

[Moose]

Well, two 90 degree angles actually, so you should be able to find at least another two sides on the triangle. Hm, I dunno.

EDIT: Oops, just realised you said 90's, not 90.

 

[Hardrive]

I just figured it out. The way I did it, you setup 3 separate Pythagorean theorem equations (one for each triangle) and substitute. There might be a different way, but at least I have an answer.

I labeled the sides to make my work easier to read:

EDIT: Sorry about the cursor in there, I just did a printscreen of the Word document.

 

[Mc Cabe]

If you guys come accross problems you can't do, you can always turn to wolframalpha

Wolfram|Alpha

e.g http://www64.wolframalpha.com/input/?i=factor+2x^5+-+19x^4+%2B+58x^3+-+67x^2+%2B+56x+-+48

 

[Hardrive]

If you guys come accross problems you can't do, you can always turn to wolframalpha

Wolfram|Alpha

e.g http://www64.wolframalpha.com/input/?i=factor+2x^5+-+19x^4+%2B+58x^3+-+67x^2+%2B+56x+-+48

Good point, but I don't think that it could solve the geometry question from above Sure, you could give it the equations, but you have to be able to understand the problem first.

 

[Mc Cabe]

Good point, but I don't think that it could solve the geometry question from above Sure, you could give it the equations, but you have to be able to understand the problem first.

indeed

/me is glad he dropped maths

 

[DarknessMonk]

I just figured it out. The way I did it, you setup 3 separate Pythagorean theorem equations (one for each triangle) and substitute. There might be a different way, but at least I have an answer.

I labeled the sides to make my work easier to read:
[qimg]http://img41.imageshack.us/img41/2923/trianglew.jpg[/qimg]

EDIT: Sorry about the cursor in there, I just did a printscreen of the Word document.

LaTeX it!

 

[Hardrive]

LaTeX it!

Last year, I would have. However, I have forgotten much of the syntax, and the Word Equation Editor is very simple. I'll have to hand it to Microsoft on that part, the 2007 version is very polished.

 

[Pspunk]

I hate math, most of the stuff posted here I don't even understand...

 

[NYYFAN]

Thanks to chw42 for helping me

 

[amrcidiot]

if you could upload a picture of the graphs, it'd be easier for me to help you

 

[NYYFAN]

My only camera I can use now is my phone and that along with my crappy handwriting you wont be able to read them

I just put the equations on my TI for the graphs

Edit: Figured it out thanks to chw42