This tag is for questions regarding the display of fractions and related problems.

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4
votes
1answer
46 views

Fake math sizing using tokens assignment

I'd like to implement sizing functions like \Huge in a way that makes them work in math mode as well. Essentially I want to create a command myHuge which maps {foo \myHuge bar} to {foo \mbox{\Huge $...
4
votes
1answer
9k views

How can I write a latex fraction without a bar? [duplicate]

Possible Duplicate: Separate long math text under sum symbol into different lines? I'm trying to write a math formula like this: \sum_{ \frac{n=0}{(n+k-i) \text{~even}} }^{k-i} This looks ...
4
votes
1answer
567 views

Improve inline fraction style with Quattrocento font

I'm using the Quattrocento font in a beamer presentation (which my audience likes a lot) but I have a small problem with inline fractions like 33 1/3, which do not look very good. Specifically the "1" ...
4
votes
3answers
110 views

Nested fraction parenthesis visualisation

Is there a way to adjust the size of the parentheses in such a way that they automatically adjust to the height of the formula? This seems easy but I cannot find anything on this. With \left( .. \...
4
votes
1answer
38 views

Recurring decimal with letter (aligning at top)

A picture is more than 100 words. How do I align the dotts (automatically) and properly at the top? Code currently in use is from here: \documentclass[12pt]{article} %% packages \usepackage{amsmath,...
4
votes
1answer
158 views

How can I improve my partial derivative in latex?

I am writint notes with a lot of partial derivatives. When the function to be differentiated is long the variable am differentiating with respect to (say t), \begin{equation*} \pd[2]{}{t} \end{...
4
votes
1answer
397 views

Left justifying in \genfrac

Is there an easy way to left-justify the "numerator" and "denominator" in \genfrac? By default it centers the "numerator" and "denominator." I am using it for a custom \atop command, per suggestion ...
4
votes
1answer
146 views

A notation for continued fractions

http://www.math.illinois.edu/~berndt/gausslandenmonthly.pdf On page 602 of this linked document (which is the 19th of 25 pages) there appears a notation for continued fractions which has been fairly ...
4
votes
1answer
289 views

Bracing fraction numerator or denominator to the left or right

I have a fraction with further fractions in both the numerator and denominator. I wish to label the fractions in the numerator and denominator with braces to the right. I would like these braces to ...
4
votes
1answer
12k views

commath, \dfrac and \tfrac

I'm using the commath package for its nice \od and \pd functions, but I find it uses \tfrac internally. It seems to have an 'if-then' clause to sometimes use \dfrac but it never does so in my tests: ...
4
votes
1answer
48 views

How to get display style in both numerator/denominator in a fraction?

Test code: \documentclass{article} \usepackage[english]{babel} \usepackage{amsmath} \begin{document} \begin{equation} z = \frac{\sum_{i=1}^N{x_i}}{\sum_{i=1}^N{y_i}} \end{equation} \begin{equation} ...
4
votes
1answer
91 views

How can I improve alignment of the numerator and denominator when vector norm bars along with subscripts throw things off?

Here's the really bad case: With a red bar to show what is bothering me in particular: Here's a simpler case where the issue is a non-issue, but perhaps one can get a hint of why it starts to ...
4
votes
2answers
171 views

Augmented matrix with fractions

I need to typeset some augmented matrices, but some of them contain fractions. I also need to do that with gmatrix, as I need its features. The following code is used to create the line in between ...
4
votes
1answer
248 views

How to make equations the same size

When I write an equation using the simple \[ and \], it comes out to the correct size, with the fractions bulging above and below the lines and the parentheses surrounding them. But when I use the {...
4
votes
2answers
218 views

Multiple lines in equation environment

I have to put an two equations inside one equation environment. I could do it with this piece o code: \begin{equation} \begin{array}{ccl} \nabla \cdot F & = & \left(\frac{\partial}{\partial ...
4
votes
1answer
2k views

Fraction in Superscript

\documentclass[a4paper]{article} \usepackage{amsmath} \usepackage{fontspec} \setmainfont[Script=Devanagari]{Sanskrit 2003} \newcommand\sufr[2]{\textsuperscript{$\frac{#1}{#2}$}} \begin{document} ...
4
votes
2answers
272 views

Can I not use the align & operator within a \frac?

This code is causing LaTeX to throw an error: Missing } inserted. It appears to be because I put a & inside a \frac command (on line 4). I feel as though it should be possible to accomplish my ...
4
votes
1answer
3k views

Schrodinger's equation [duplicate]

Trying to get Schrodinger's equation to format better. The first term is -\dfrac{\hslash^2}{2m} \, \dfrac{\mathrm{d}^2 \psi}{\mathrm{d} x^2} However, because of the exponent in the denominator, ...
4
votes
1answer
148 views

Aligning the Left Hand Side of a big equation with fraction

After spending quite some time making sure this wasn't already answered, I decided to post this anyway, as I haven't found what I'm looking for. I have this equation with nested fractions, and I want ...
4
votes
1answer
477 views

Underlining fractions

I need to be able to underline equations involving fractions, which are aligned using the alignedat environment from amsmath. To be able to underline at all, I'm using the solution from this question -...
3
votes
2answers
2k views

How to change / to be horizontal?

I like to change a/b to be a - b how to do that?
3
votes
2answers
170 views

Should superscripts be carried out of a fraction?

I can't help stumbling upon the usual way LaTeX renders fractions with superscripts: I think that the asterisk has a lower "weight" then the symbol and should not be treated as equal. I find ...
3
votes
3answers
190 views

Make big fractions look nicer

I've got a few lines of calculation that involve large fractions and it is looking horrible on Latex. Does anyone have any suggestions as to how to make the fractions bigger with more space so that ...
3
votes
2answers
328 views

Displaying fractions nicely

I'd like the following to look nicer: $\frac{1 - \left(\frac{r-3}{r-1} \right)^{k-(p+q)+1}}{1 - \left(\frac{r-3}{r-1} \right)}$ As of now, the horizontal line is way too long.
3
votes
3answers
2k views

Changing fraction style in LaTeX as generated by Matlab

A= [0.7577 0.7060 0.8235 0.4387 0.4898 0.7431 0.0318 0.6948 0.3816 0.4456 0.3922 0.2769 0.3171 0.7655 0.6463 0.6555 0.0462 0.9502 0.7952 0....
3
votes
4answers
357 views

Latex incorporate a fraction in tan

I want to write in latex that an angle equals to tan of (BM/AB). I wrote this: $\widehat{BAM}$ = $ \tan ($ \dfrac {BM} {AB} $)$ But I have an error "missing $ inserted. Can someone help me?
3
votes
2answers
3k views

How to put several lines in the numerator of a fraction?

When I use \\ it breaks the frac layout. Now I come up with the following solution: $$\frac{{O\vdash e_1:T_1 \atop O[T_1/x]\vdash e_2:T_2}}{O\vdash (let\ ((x e_1))\ e_2):T_2}$$ But it gives two ...
3
votes
1answer
123 views

Cancel out factorial fractions

I have the following fraction: How can I use a line and cross off the 3, 2, and 1s in the numerator and denominator? I need a line crossing off the 3s in the numerator and denominator - one line. ...
3
votes
1answer
277 views

Use catcode for alternative way of writing fractions

Writing fractions using different syntax would sometimes be useful, instead of using \frac{ab}{cd}, I would prefer to write something like \frac{ab⌂cd} where the Unicode ⌂ is the }{. n.b., I don't ...
3
votes
2answers
412 views

Multiple horizontal line separators? Multiple \over-s?

How to code the syntax like fraction, but with more than 2 components? Fractions consist of numerator and denominator while I need more. In other words: how to code column-matrix with horizontal lines ...
3
votes
2answers
125 views

How to get a horizontal line that is aligned at the bottom of a fraction?

$\frac{18e-12}{10}=\rule{5cm}{1pt}$ gives How do I get something that likes this Thanks.
3
votes
1answer
270 views

How to properly display a product within a fraction?

I have product inside a fraction, like this: \[ \phi_n(t)=\frac{t^n-1}{\prod_{\substack{ d \mid n,\\ d<n.}} \phi_d(t)} \] And that places the "limits" of the product on it's side, not ...
3
votes
1answer
126 views

Mixed numbers (fractions) with big ''integer part'' size

In some math textbooks for primary level, the mixed numbers are written with the integer almost the same height as the fraction. For example: I want to write in LaTeX mixed numbers like the above ...
3
votes
1answer
57 views

Numerators and denominators in fractions at different height

I'm trying to write a rather lengthy equation with a fraction multiplied by another fraction that has several \left( and \right) brackets. The height of the symbols above the fraction line is two high ...
3
votes
3answers
470 views

Problem with \frac macro

I am using this code for a mathematics problem. The code works but the lower fraction looks really dull, the parenthesis is doing something it isn't supposed to. What I can do about this? \begin{...
3
votes
1answer
214 views

How do I make fractions automatically displayed in lines properly?

I would like to know how to make code of fractions in article class more easy to handle. Usually, if I type ${a \over b}$ then LaTeX does not display $a/b$, which is what I want. So I have to say $a/...
3
votes
2answers
9k views

Bigger fractions without using \dfrac

Is there any way to make fractions bigger? I know one can use \dfrac but is there any code I can use in the document preamble to make all fractions bigger?
3
votes
2answers
66 views

Display fractional formula nicely

I've tried using the split environment as well as dfrac, however, I can't seem to be able to make this equation look nice at all. \documentclass{article} \usepackage{amsmath} \begin{document} ...
3
votes
1answer
199 views

Problem with fraction

I have a problem with the appearance of a fraction which has in its numerator another fraction. It is not very beautiful as the second fraction is small, even though I use \displaystyle. How can I ...
3
votes
1answer
1k views

How to create A/B with LaTeX/LyX?

I want to create frac with this style: Is this possible? I try to find another way, alternative to xfrac.
3
votes
2answers
121 views

Non-commutative fractions

There are symbols for non-commutative fractions? I know \holter and \polter (see here), but they are very ugly (lateral lines are too long for my taste) Edit: By non-comutative fraction I mean a ...
3
votes
2answers
3k views

Line spacing with inline formula including fraction

I have a fraction in an inline formula as can be seen in the picture. \dfrac from the amsmath package was used. (This is article class with 14pts and linespread 0.9.) Though the space between the ...
3
votes
1answer
18 views

How can I use a large solidus in a display fraction in LyX?

I would like to use the equivalent of the latex \middle/ in a display equation in LyX. I have a fraction with a large left hand side, and I want the solidus (/) to be automatically sized to match the ...
3
votes
3answers
201 views

How can I uncover the fraction line in beamer?

I would like to uncover elements of an equation one at a time. This is easy enough usually, but in this case I'd like to progressively reveal a fraction. The problem with the way I'm doing it is that ...
3
votes
1answer
542 views

Displaying numbers above each other (like a fraction), but without horizontal line and with less vertical space between them

I want to have a 2x2 matrix of arrows (\uparrow and \downarrow) to illustrate electronic spins. I've managed to get a fraction without the horizontal line using \genfrac, but I can't figure out how to ...
3
votes
0answers
248 views

Two fractions with the same size [closed]

Can anyone tell me how I can make $A=\frac{1}{a} \frac{1}{1+\frac{a}{b}}$ look the same? So I want $a$ to be on the same height as the other denominator. MWE \documentclass[11pt]{article} \begin{...
2
votes
2answers
142 views

typesetting addition of fractions

I was wondering what the most efficient way is to typset this: My first thought was doing this with tabular but seems quite messy to me.
2
votes
1answer
157 views

some text below fraction

I am trying to place some text below the fraction but I am getting the following error: ! Missing $ inserted. $ l.5 ...ac{1}{\alpha_{ideal}}}{\text{\leq r{i-1}} }$ Code: \documentclass{...
2
votes
2answers
225 views

Writing fraction in matrix

I am trying to write a fraction in a matrix. I am doing it using the following code: \[ \begin{bmatrix} \frac{1}{6} & \frac{5}{6} & 0 & 0 \\ 0 & 0 & 1 & 0 \\ ...
2
votes
2answers
247 views

How to make this simple expression $f(\dfrac{r}{h})$ look nice?

How to make this very simple expression nice? I am not convinced by the parenthesis and the vertical spaces among the fraction. Feel free to share how you would have written it. \documentclass[]{...