Author Topic: Aw crap!  (Read 962 times)

Offline Ulciscor

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Aw crap!
« on: July 13, 2005, 05:50:12 AM »
I got a letter from my university this morning containing a list of suggested reading before I go;

Vectors - I have done this one
Series - I don't know exactly what this is; I have done geometric and arithmetic if that's it
Matrices - What the hell are matrices?
Differential Equations - I have done these too
Complex Numbers - I know about these but not how to use them
Taylor Series -  Never heard of it!
Induction - Nor this!!!
Elementary Ideas Of Probability - I am OK here lol

I am panicking as I have not heard of most of these things. Also they have sent 5 pages of questions on algebra and calculus for me to do and send back. I can do one question HOPEFULLY, cos I haven't even tried it yet I am too freaked out.

"By making appropriate trigonometric and/or hyperbolic substitutions, evaluate the following integrals"

I have done integration by substitution but what the hell are hyperbolic functions?

Someone pleeeeease help!!!!!  :(  :unsure:  :wacko:  :blink:
:D Ulciscor :D

I used to be indecisive, but now I'm not so sure.

Offline PurpleYouko

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Aw crap!
« Reply #1 on: July 13, 2005, 08:53:18 AM »
Matrices is the plural of matrix.

Surely you must have done these. My daughter did them in 7th grade (I think).

it is just a case of multiplying a bunch of numbers in a 1 or 2-dimensional array with another bunch of numbers in another 1 or 2-dimensional array.

I just did a quick google and this is about the best I could come up with. These web sites don't half know how to overcomplicate a simple process.

Numsgil can probably help more with the rest of the stuff. he is the math major around here.
« Last Edit: July 13, 2005, 08:54:15 AM by PurpleYouko »
There are 10 kinds of people in the world

Those who understand binary.

and those who don't

:D PY :D

Offline Numsgil

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Aw crap!
« Reply #2 on: July 16, 2005, 01:05:15 AM »
Taylor series are a way of approximating a difficult function with increasing degrees of precision.

For instance, it's a fairly (complex) way to calculate the square root of a number.

You only need to understand arithmetic series and derivatives for it.