I have the following function in a report of global size 12 :

$Q= \rho V c_{p} \left( T -T_{\infty} \right) [ 1-e^{\frac {h A_s}{\rho V c_{p}}t}]$

As one would expect, the exponential function's argument appears very tiny:

enter image description here

Now , my question is that:

Are there ways to make deal with this problem?Some people may suggest and have suggested) that I change the argument's font size..that surely is a way but in small font sizes such as font size 12, it looks terrible , and others suggest to use the exp function , but I feel that , that answer applies to a class of functions that have popular inline alternatives.

Also answers suggested should be within the range of good scientific/mathematical documentation practices.

  • Welcome to TeX.SX! You may have a look on our starter guide. – jub0bs May 20 '13 at 14:20
  • 3
    I wouldn't use superscripts in this case, I would use the \exp notation: $Q= \rho V c_{p} ( T -T_{\infty} )\Bigl[ 1-\exp\Bigl({\frac {h A_s}{\rho V c_{p}}t\Bigr)}\Bigr]$. Perhaps it would also be a good idea to use a displayed expresion. – Gonzalo Medina May 20 '13 at 14:22
  • 1
  • noted the the point raised in your answer , but how is that any different from what the answer mentioned below..i.e in your answer you scaled the superscript , in the answer mentioned below he scaled the font of the superscript ? – metric-space May 20 '13 at 15:25

I would suggest:

$Q= \rho V c_{p} \left( T -T_{\infty} \right) [ 1-e^{h A_s t / \rho V c_{p}}]$

or, if you really want the t kept separate from the fraction, then:

$Q= \rho V c_{p} \left( T -T_{\infty} \right) [ 1-e^{(h A_s / \rho V c_{p})t}]$


enter image description here

| improve this answer | |

A number of possibilities to choose from:



\noindent Inline math:\\

$Q= \rho V c_{p} ( T -T_{\infty} )
    [ 1-e^{\frac {h A_s}{\rho V c_{p}}t}]$
\quad (pretty bad)\\

$Q= \rho V c_{p} ( T -T_{\infty} )
    \Bigl[ 1 - e^{\scalebox{1.2}{$\frac {h A_s}{\rho V c_{p}}t$}} \Bigr]$
\quad (awful)\\

$Q= \rho V c_{p} ( T -T_{\infty} )
    \Bigl[ 1 - \exp\Bigl({\frac {h A_s}{\rho V c_{p}}t\Bigr)}\Bigr]$
\quad (better)\\[1em]

\noindent Display math:
    Q= \rho V c_{p} \left( T -T_{\infty} \right)
        \left[ 1-\exp{\left( \frac {h A_s}{\rho V c_{p}} t \right)} \right]
        \quad \text{(much better)}
| improve this answer | |
  • I was wondering if your answer would the same if rather than using the exponential function , you were using lets say some other function that did not have a recognized inline type alternative(all the other above restrictions are in place)? – metric-space May 20 '13 at 14:53
  • @nerorevenge Suppose for the sake of argument e was \theta then I guess the only possibility is using a few \fractions next to each other in the exponent such that, at least, the readability is preserved as much as possible. – percusse May 20 '13 at 15:18

enter image description here

$Q= \alpha \Delta T \left( 1-e^{\beta t}\right)$,

where $\alpha=\rho V c_{p}$,
$\Delta T=T-T_{\infty}$,
$\beta=h A_s / \alpha$.
| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.