Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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Oh I see. Thank you.

Hold on, why are you using sin and tan?

I would of rounded and got 7 anyway. But the whole double root thing is just over my head. I don't think we need to know that at moment. I dunno lol. But at least I know how to read the exact value triangles now. :3

Ahh, I see. Post away.

Thanks, that really helped. I'll practice using that equation over the weekend.

I don't think we've done roots. What do they look like? sin^2 = ? or something?

Ahh! So the answer would be;

h(x) = f(g(x))

h(x) = 4x - 18

I see, I thought it would be a little different with a third letter involved.

bobbym wrote:

What is the difference between calling something x or y?

lightning wrote:

So what happens when it's like h(x) = f(g(x)) ?

I saw something like that. What's the difference?

Nothing. But there was a third one involved too so that one confused me in class.

bob bundy wrote:

Have you sorted the trig question because I can give you exactly the diagrams you need.?

I'll take all the help I can get. Fire away.

Oh, nevermind. Thanks.

So what happens when It's like h(x) = f(g(x)) ?

I saw something like that. What's the difference?

Not sure how it's 4x - 18. Like, I can't see the jump? You know what I mean?

AHH. Oh get it now. Much appreciated, a-thank you. :L

One topic down.

I need help with the ... uhh... I dunno what it's called. But it's like;

g(x) = 1x - 5

f(x) = 4x + 2

And then you've to do f(g(x)).

My problem is subbing it in. My teacher teaches at a fast pace so I've not had time to absort what I have to do so I'm sorry if my descriptions of math are all higglety pigglety.

I know you've to sub it into an equation where there is an "x" but I don't know how to start.

Oh. Thanks.

How do I read the triangles though?

I don't really have a question. ^ It's more understanding of what I'm doing in class. I just need help on how to read the triangles from the picture.

Au101 wrote:

Hi

I think your diagram is wrong, you can't have a right-angled triangle of sides 1, 2 and √3, like that since

I think that the hypotenuse should be 2 and the side which is currently 2 should be √3.

The teacher said that diagram was to help us find the angles, I don't really know how to find the answers and stuff.

I think I may have explained myself wrong... uhh... the triangles are related to sin graphs. Like to find the points of degrees. Does that make sense? There's radians involved too.

I got told that Pi = 180 when doing this. Like, if;

(0≤x≤2(Pi)) = (0≤x≤360°)

It's optional to work in either degrees or radians, but I prefer degrees.

Oh, idk how to fix it. FAAAAIIILL. I rotated the image but it didn't seem to work.

<URL=http://imageshack.us/photo/my-images/23/manga2003.jpg/><IMG>http://img23.imageshack.us/img23/8239/manga2003.jpg</IMG></URL>

No idea how √3 = 60° or any of it, really.

(Also no idea how to use the syntax by the way, but bare with me. xD)

Lol, the lighting in my room isn't that good. xD

**lightning**- Replies: 44

Uhh, if you don't mind I would like to go over notes I have received from my maths teacher here. I don't quite understand the way she has put them and I sort of need help with my higher maths, so I'll be putting up stuff here almost daily and would appreciate if you could help me with them. :3

Please note that I am a visual learner and don't really benefit from exercises like, learning games and stuff.

'Kay, first up is exact values. I don't really know on how to find the angle? I know it has to do with Basic trig, graphs and the use of the CAST diagram... I think I'm getting confused with finding points on a graph, but anyway, I know there's the triangle involved (I don't know how to read it) and the table, but that's about it.

Any tips? I know this is a must to learn, so that's why I'm starting with it.

**lightning**- Replies: 83

The rules are simple; just ask the person below what colour their ____ is while answering the persons question above you. :L

What colour is your shirt?

bol bnb nyhujm

*fail*

Stupidly

Oh, that site died. xDD I have a new one, 13 members!

Roraborealis wrote:

I have Animal Crossing for the DS! I haven't been on it in months. I finished playing after I got all the fish and bugs (hated the tarantula ) and I'm just missing some of the Gyroids. I mean to get it for the Wii.

Me too! The Wii is much better than the DS, I hate the scorpian and tarantula they chase you. O_o

If you get it for the Wii I could tell you what happens if you befriend Brewster. xDD