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

[Flop21]

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]

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:

 

[soloooooo]

Re: MATH1131 help thread

Good idea - perhaps this thread should be moved to the UNSW science faculty sub forum though?

http://community.boredofstudies.org/139/faculties-science-medicine/

 

[Flop21]

Re: MATH1131 help thread

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

 

[Flop21]

Re: MATH1131 help thread

Good idea - perhaps this thread should be moved to the UNSW science faculty sub forum though?

http://community.boredofstudies.org/139/faculties-science-medicine/

Yeah wasn't sure whether to or not. I'm not sure how 1st year uni maths differs from uni to uni, but assumed it would be similar. So everyone can just post their math problems and get help here [or mods can move it wherever best].

 

[InteGrand]

Re: MATH1131 help thread

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

 

[InteGrand]

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]

Re: MATH1131 help thread

the unsw mathematics society has a facebook page for such queries


Did you join MathSoc?

 

[leehuan]

Re: MATH1131 help thread

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

 

[dan964]

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)

 

[Silly Sausage]

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]

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]

Re: MATH1131 help thread

I write with a half-arrow.

 

[leehuan]

Re: MATH1131 help thread

I write with a half-arrow.

Oh that, so do I. Who the hell has the time to put in the complete > when you can just use \

 

[Paradoxica]

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 \

\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]

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]

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]

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]

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

 

[Flop21]

Re: MATH1131 help thread

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

i hear he's pretty awesome

are they suppose to help with actual questions or just how to use maple?