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First Year Mathematics A (Differentiation & Linear Algebra) (1 Viewer)

Flop21

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Is there a thread for math help for 1131 (or other first year math equivalent) on here?

If not, this thread will be for posting (uni math) questions to get help for.
 

Flop21

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Re: MATH1131 help thread

I'm watching Kahn academy videos on vectors. I'm understanding everything so far, the guy is using (x,y) notation, but then suddenly switches to a different notation I'm not familiar with. This happened in my class lecture as well.

Can someone help me understand what this notation means:
 

Flop21

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Re: MATH1131 help thread

How is R^2 different to R? (and by R I mean the special R/real numbers).
 

Flop21

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InteGrand

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Re: MATH1131 help thread

I'm watching Kahn academy videos on vectors. I'm understanding everything so far, the guy is using (x,y) notation, but then suddenly switches to a different notation I'm not familiar with. This happened in my class lecture as well.

Can someone help me understand what this notation means:
 

Shadowdude

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Re: MATH1131 help thread

the unsw mathematics society has a facebook page for such queries


Did you join MathSoc?
 

leehuan

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Re: MATH1131 help thread

I've just been using my own thread for assistance with 1151.
 

dan964

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Re: MATH1131 help thread

I'm watching Kahn academy videos on vectors. I'm understanding everything so far, the guy is using (x,y) notation, but then suddenly switches to a different notation I'm not familiar with. This happened in my class lecture as well.

Can someone help me understand what this notation means:
That notation with a vertical arrow is used to refer to a vector. Typically, e.g. in MATH201 at UOW, this notation is used to refer to row vectors; although it can be used to refer to column vectors as in the case here.

(edit: Integrand already answered this)
 
Last edited:

Silly Sausage

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Re: MATH1131 help thread

That notation with a vertical arrow is used to refer to a vector. Typically, e.g. in MATH201 at UOW, this notation is used to refer to row vectors; although it can be used to refer to column vectors as in the case here.

(edit: Integrand already answered this)

Some of the math tutors\lecturers at USYD refer to the arrow notation as the "Russian way" of writing it. Apparently the normal westernised one is basically a squiggly line that's under the letter.
 

leehuan

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Re: MATH1131 help thread

Some of the math tutors\lecturers at USYD refer to the arrow notation as the "Russian way" of writing it. Apparently the normal westernised one is basically a squiggly line that's under the letter.
I guess that's just for the vector a etc.

If you got given a vector as defined by ray AB though or something, then well you need the arrow above no matter what.
 

Paradoxica

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Re: MATH1131 help thread

Oh that, so do I. Who the hell has the time to put in the complete > when you can just use \
Code:
\overset{\rightharpoonup }{A}     \quad     \overset{B}{\leftarrow}


This is for your sake, and possibly mine if I ever have to use vectors on BOS.

Lol, an italicised backward slash is a vertical line. This is amusing.
 

leehuan

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Re: MATH1131 help thread

Ah thanks. If I forget I'll just consult daum though. I've only recently begun typing LaTeX myself without any other software



I use a swiggly line under stuff like b but when I refer to a vector with labelled endpoints I do that
 

Flop21

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Re: MATH1131 help thread

How do I do the last parts of these questions. I understand the rest, but have no idea what to do when it comes to throwing in epsilon in there (the last questions/s).

 

InteGrand

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Re: MATH1131 help thread

How do I do the last parts of these questions. I understand the rest, but have no idea what to do when it comes to throwing in epsilon in there (the last questions/s).

 

Shadowdude

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Re: MATH1131 help thread

How do I do the last parts of these questions. I understand the rest, but have no idea what to do when it comes to throwing in epsilon in there (the last questions/s).

i think you should ask the maple consultant that's on tomorrow morning

i hear he's pretty awesome :detective:
 

Flop21

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Re: MATH1131 help thread

i think you should ask the maple consultant that's on tomorrow morning

i hear he's pretty awesome :detective:
are they suppose to help with actual questions or just how to use maple?
 

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