Notation (1 Viewer)

[McLake]

Times: *

Power: x^2 (or x²)

Square Root: sqrt() (or √)

Subscript: I_n (or I_n)

Integration:
I{a->b} f(x) dx (upper bound b, lower bound a, integrate f(x) w.r.t. x)
OR
/ b
| F(x) dx
/ a

Pi: Pi, pi or π

 

[ND]

Subscript: I_n
Is there one for bar?

 

[ezzy85]

we should use the scripts for sub/superscripts: x² or I_n

 

[BlackJack]

Anyone thought up of a good way to rep. integration? We might need it...

 

[spice girl]

Originally posted by BlackJack
Anyone thought up of a good way to rep. integration? We might need it...

how bout this:

I{a->b} f(x) dx
integral, upper bound b, lower bound a, integrate f(x) w.r.t. x

 

[Affinity]

maybe Z' for the conjugate of Z

Integral

/ b
| F(x) dx
/ a


But I think spice girl's notation is better/more convenient.

<SUB>subscripts</SUB> and <SUP>superscripts</SUP> takes time to type for the average typist, I recommend I_n, unless the work gets messy. Even I(n) would be good too.

Exp(k) e to the power of k. use by some people.
Arcsin, Arccos Arctan are the inverse trigs.

I wouldn't recommend the use of @ for theta. It is clearer to use a letter such as t or p or q.

 

[OLDMAN]

Ambiguity is a main concern. Found the following notes:

Ambiguous Unambiguous Unambiguous
1/2x............1/(2x).............(1/2)x
2^n-1.........2^(n-1)..........(2^n)-1
e^x^2........e^(x^2).........(e^x)^2
good form :sin^2(2x)

 

[Affinity]

e^x^2 = e^(x^2) because (e^x)^2 could be simplified into e^2x
2^n-1 = (2^n) - 1, indicies before subtraction.

 

[Rahul]

wats the code for super/sub scripts?

 

[McLake]

Originally posted by Rahul
wats the code for super/sub scripts?

Replace the square bracket ([]) with an angle (<>) bracket

 

[Affinity]

(n C r) or binom(n,r) for n choose r.
and (n P r) for permutations

 

[jayz]

u should write a book on notations AFFINITY! u r pretty good at it! lol

 

[jnothman]

there are plenty of books on notation and notation issues....

but there's more than enough notation for you all yet to learn in maths, in all sorts of sciences, semi-sciences (formal philosophy, linguistics), etc...

One of the issues with notations is that different group grow different standards, and so you'll often find that different subjects will have different symbols for similar things, as is needed by the field.

Notation standardisation is something constantly happening and changing, and certain forms such as the bracket form of the binomial are being popularised by the use of computers...

Also there are many technologies coming more available to the general public to write maths on computers or web sites, but can be quite heavy or complicated or unsupported...

When you have a long solution to a problem to share with others, use Equation Editor or some other computer-based maths editor, convert the document to pdf or take a screenshot and post that.

- Joel

 

[Dumbarse]

Joel Nothman!!!
your my hero man

i reckon half of the poeple who sat the HSC last year used yor notes

i thought u were a myth

 

[Rahul]

Originally posted by Dumbarse
i thought u were a myth

lol i thought you were a teacher

 

[KeypadSDM]

Logs:

Log_b[a] or Log_b[a]

Trig:
(Sin[A])^2 = (Sin[A])² = Sin^2[A] = Sin²[A]

Cosec[A] = Csc[A]

Sigma notation:

S{r=0, n}[f(r)] = The sum of f(r) from r = 0 to r = n

 

[freaking_out]

i hate reading maths using these funny notations!

 

[KeypadSDM]

Complain to BOS, we don't want to hear it here

 

[freaking_out]

Originally posted by KeypadSDM
Complain to BOS, we don't want to hear it here

well i'm greatful for the fact that they're providing these free forums- and plus what can they do anyways?

 

[KeypadSDM]

Originally posted by freaking_out
well i'm greatful for the fact that they're providing these free forums- and plus what can they do anyways?

I dunno, but you're the one who wants to complain