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

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6
votes
3answers
678 views

Suggestions for splitting a large fractional equation?

I have seen a number of questions detailing specific means for how to break down a given equation, however I am more interested in the design at this point. That is, I'm not sure what part of this ...
6
votes
1answer
938 views

Nested exponents look too small

When I type $e^{\frac{\ln(r)}{2^{j}}}$, the output is: In the exponent, the denominator looks like 2j (especially in normal font), but it is supposed to look like 2^j. How can I make the term 2^j ...
6
votes
1answer
219 views

About shorthand \frac

It is possible to write \frac 2 4 or \frac \pi 4 to get 2/4 and \pi/4, respectively. However, it is not possible to write \frac \sqrt{2} 2 to get \sqrt{2}/2. Are there consistent rules on how to ...
6
votes
1answer
301 views

Create multiline fraction

How to create an equation like in the image below. I tried to use \cfraq and \hline but with no success. I am asking for the layout only, not the formulae.
5
votes
3answers
303 views

Can this kind of “variant fraction notation” be created in latex?

I'd like to be able to write math that looks a little like this: So it is a bit like a fraction, but there's a also a top line, and there's an arbitrary symbol or formula immediately left of where ...
5
votes
3answers
4k views

Text-mode in fractions?

I want to have written words in a fraction but to have them in correct fraction form and not crude-looking. So, I have; $\displaystyle\frac{Actual Value of Production}{Demand}$ x $100$ But it ...
5
votes
4answers
14k views

Subscripts in partial derivatives

I would like to print the partial derivative operator $\frac{\partial}{\partial k_x}$, but the spacing and the length of the bar bug me a little. I would really like the fraction to be typeset as ...
5
votes
1answer
484 views

How to automatically add parentheses around fractions?

Is there any way to make LaTeX automatically put parentheses around a \frac if it is followed by a superscript expression?
5
votes
2answers
208 views

how to lower last term in a continued fraction after a diagonal row of dots?

How can I lower the last term of a continued fraction when it follows a diagonal row of dots?
5
votes
1answer
231 views

Expanding line height when equations have displaystyle fractions

In my document, I have got a lot of equations in inline mode, like: \documentclass{article} \begin{document} Eu sit tincidunt incorrupte definitionem, vis mutat affert percipit cu, eirmod ...
5
votes
2answers
354 views

Square root in fraction space problem

I'm having some troubles with the square root symbol within a fraction. This code \documentclass{book} \begin{document} \begin{equation} h_4 = \frac{\sqrt{1.5 \gamma_4 -3.5}-1}{18} \end{equation} ...
5
votes
2answers
349 views

Dante Monotype typeface and fractions

I am handling a text which is natively written in a proprietary LaTeX documentclass which implements Dante Monotype fontface. In this text there is a lot of maths and I would say that it works, ...
5
votes
1answer
448 views

Converting text math to TeX math (e.g. automatically filling in \left(, \right), \frac, etc)

At some point, it occurred to me that another level of abstraction may be possible on top of LaTeX. For example, why should I type \left( \frac{\frac{a}{b + c} \frac{w + \lambda}{z}}{x\left[ ...
5
votes
3answers
170 views

Improper display of parentheses in fraction of fraction

The following code: $\dfrac{\left( \dfrac{\left( \dfrac{1}{2}\right) }{2}\right) }{2}$ gives a nasty output: It seems that the $\left( \right)$ command doesn't do the job. Any idea how to solve ...
5
votes
1answer
1k views

How to make slash (/) paste with correct Unicode codepoint depending on context?

Unicode offers different characters for the slash: U+002F (/) for the ordinary slash U+2215 (∕) for the mathematical division operator U+2044 (⁄) to designate vulgar fractions How can I have these ...
5
votes
1answer
91 views

How to remove the space before and after fraction line of \frac command

I find the \frac command add a space of 1.2 pt before and after a fraction. See the figure below \documentclass{article} \usepackage{amsmath} \def\abc{\genfrac{}{}{0pt}{0}{0}{0}} \def\Abc{\frac00} ...
5
votes
2answers
373 views

Convert hours (as decimals) to fractions for billable-time invoice

I'm creating an invoice in LaTeX and I've entered the hours I've worked as decimals (for example, 1, 1.5, 0.75, 2.25), but I want to display those decimals as fractions (1, 1½, ¾, 2¼). (The reason ...
5
votes
2answers
389 views

Matrix doesn't shrink when put in fraction.

This is my minimal example, the problem is the different size of the two x. I would expect the matrix to be shrunken too, but it isn't. Why is this and how is it corrected? ...
5
votes
1answer
833 views

Aligned numerator and denominator in \frac or any other variant

Is there a way to align the numerator and the denominator of a fraction? Consider two fractions (from a SIAM paper) The denominator (k!) is nicely centred in the first fraction. However in the ...
4
votes
3answers
132 views

Keep numerator inline with rest of equation

In the following example, I would like to to keep the Q''(p) on the same line as the rest of the equation, and put the vinculum and 2 underneath. \documentclass[12pt,reqno]{amsart} ...
4
votes
4answers
458 views

\frac{1-z^{n+1}}{1-z} doesn't look very good and how to leave space equal to the size of a given text

When we write it by hand we usually align the 1's in numerator and denominator. Should I change it manually, i.e. defining a command for typing the sum of the geometric progression or is there a ...
4
votes
4answers
128 views

Numbers are very small in numerator and denominator using \frac

When I use the \frac command, I notice that the characters used for the fraction terms become smaller than those which are not in the \frac command. Is there a way to correct it?
4
votes
1answer
1k views

\text{} in a fraction but spread over two lines

Rather than try to describe in words or by way of a MWE, I have uploaded a picture of the desired result. I know how to create all the components (e.g. \frac{}{} \text{}, ^{}) of this fraction, except ...
4
votes
4answers
358 views

Breaking the equation inside a fraction

I am trying to write this equation using the help provided in the link below How to break a long expression in the denominator of a fraction? Still the equation goes outside the margin. I using ...
4
votes
2answers
934 views

New to TeX; issue with compiling

I keep getting the compiling error >file ended while scanning use of \frac. I can't see any missing {}, so I'm not sure what to do. \documentclass[]{scrreprt} \usepackage{geometry} ...
4
votes
1answer
157 views

TeX, LaTeX and fractions

I just stumbled upon a Math SE answer which used {num \over den} for fractions. This seems perfectly equivalent to \frac{num}{den}. I'm guessing the former is TeX syntax and the latter is the LaTeX ...
4
votes
2answers
284 views

How to reduce the size of fractions typed in align environment?

When digit fractions align environment, this goes with a size \displaystyle. But I want the size is like the one shown in a paragraph. I tried with \scriptstyle but I get letters too small and the ...
4
votes
1answer
433 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
1answer
88 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
212 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
1k views

issues with fractions

I have: \usepackage{nicefrac } \begin{align*} &= \frac{2}{\sqrt{2y+1}\sqrt{2 \pi}} \exp \left( -y-\nicefrac{1}{2} \right) &&\forall y \in [-\frac{1}{2} , \infty) \\ &= ...
4
votes
1answer
96 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
93 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
1k 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
1answer
10k 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
1k 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
102 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
372 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
1k views

How to change / to be horizontal?

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

How to get a vertical bar which is the exact size of the object?

I wish to use two vertical bars to sandwich a whole object: What I found is that (Failure 1) if I use usual \mid or \rvert or |, it is too small. (Failure 2) if I use usual \left| or ...
3
votes
2answers
123 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
129 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
273 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
1k 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 ...
3
votes
4answers
141 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
1answer
710 views

Fraction whose items are words

I have troubles writing a fraction whose items are words not numbers. In a nutshell I should write: minaccia/vulnerabilità --> this is the numerator ---------------------- contromisure ...
3
votes
1answer
232 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
324 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
1answer
135 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
621 views

Fraction with doubled line

Is there a way to make the fraction line look like the equality (=) sign, i.e., to have two parallel horizontal lines with a little gap in between? Many thanks!