An angle under 90 Degrees is called an acute but what would the angle be called if over 90 Degrees? please Admin i need to know.

K.Cheetham

After obtuse is there anymore?

K.Cheetham

I absolutely hate maths. I thought i was getting better at it, but i proved myself wrong. What can i do to improve my maths skills? It is sooo hard. Please reply somebody!!! From Amy. Year 11.

Amy, just thought I'd give you a couple of tips on how to improve your maths. Maths is much more about doing than about reading. You could read a maths book for hours and not learn a thing. What you should do is find an example which you can understand and then do lots and lots of similar examples yourself until the method becomes extremely familiar. The biggest mistake that students make when studying maths is to give up once they encounter difficulties. They then avoid the subject in favour of other subjects and this only makes the problem worse. You have to put the time in to it and if you find yourself simply reading your maths book, take out a pencil and start working things out. If you find the problems difficult, go back to some simpler problems and work on these first. Good luck. If you get stuck on something, post a message and I'll see if I can help. By the way, I'm a maths teacher in Ireland.

Well, we do have some simple explanations of fractions starting at Equivalent Fractions - look for the links at the bottom of the page for lots more about fractions.

Likewise you can check out Percentages and also do a short Percentage Test

Correct, amber, and we have some examples of reflex angles here

I need help!!

Well, by using the "absolute value" function abs(), you can use:

abs(x) - x^2   (absolute-value-of-x minus x-squared)

When I tried this on our graph plotter, I found it looked best using 2*abs(x)-x^2

Thats an M for sure... but i need it to be pointy like a captial M

I want to know about limits.
!!!Please HELP meeeeeeee!!!!!

Last edited by amila123 (2005-02-23 18:34:10)

Well done, j4tt, of course it is impossible!

Well, amila123, "limits" just mean that if you keep going, where do you end up?

If you start walking fast, then get slower, and slower, and slower, eventually you will be able to figure out that you will never get beyond a certain point. That point is the limit.

It is best to see this by playing with graphs. Try going to these graphs, and choose "reciprocal".

As you move to the right, x increases, but y gets smaller. What if you move very far to the right? x approaches infinity, and y approaches 0. So, the limit at infinity is 0.

Now, that is just an easy example, and there is much more to learn, but the idea is still basically simple.

Hiya, princess.

Can be confusing !

The Number Line:

... -5 ... -4 ... -3 ... -2 ... -1 ... 0 ... +1 ... +2 ... +3 ... +4 ... +5 ...

Negative Numbers head to the left (this way <--), and positive to the right (this way -->)

If you have a positive number, say 3, you have this:

... -5 ... -4 ... -3 ... -2 ... -1 ... 0>>>+1>>>+2>>>+3 ... +4 ... +5 ...

If you have a negative number, say -2 you have this:

... -5 ... -4 ... -3 ... -2<<<-1<<<0 ... +1 ... +2 ... +3 ... +4 ... +5 ...

If you add them together you get this:

... -5 ... -4 ... -3 ... -2 ... -1 ... 0>>>+1>>>+2>>>+3 ... +4 ... +5 ...
... -5 ... -4 ... -3 ... -2 ... -1 ... 0  ...  +1<<<+2<<<+3 ... +4 ... +5 ...

In other words you go "3 paces to the right, then 2 paces to the left"

So, "negative" just means "go in the other direction"

Subtracting also means "go in the other direction"

So ADDING a NEGATIVE number is the same as SUBTRACTING a number

If you SUBTRACT a NEGATIVE number you have to "go in the other direction of the other direction", which turns you back to the normal direction again !!!

Have a look at Baby Steven coping with all of this in Multiplying Negatives