## LaTeX forum ⇒ Math & Science ⇒ I hate radicals in LaTeX ! Topic is solved

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Cham
Posts: 826
Joined: Sat Apr 02, 2011 4:06 pm

### I hate radicals in LaTeX !  Topic is solved

I'm having troubles with an index and an exponent under a radical, and I don't know anymore what to do !

Here's a MWE to show the problem :
\documentclass[12pt,letterpaper,twoside]{book}\usepackage{lmodern}\usepackage{amsmath}\usepackage{tensor} \begin{document}	\begin{equation}		I =		\begin{cases}			\, \displaystyle{\frac{1}{2} \; A \smash{\left( \tensor{t}{_0} + \alpha - \frac{\beta}{\displaystyle{\sqrt{2 \alpha \, \smash{\tensor{t}{_0} + t_0^2}}}} \, \right)}}, &\text{if $k = - 1$.} \\[18pt]			\, \displaystyle{\frac{2}{3} \; A \, \tensor{t}{_0}}, &\text{if $k = 0$.} \\[18pt]			\, \displaystyle{\frac{1}{2} \; A \smash{\left( \tensor{t}{_0} - \alpha + \frac{\beta}{\displaystyle{\sqrt{2 \alpha \, \tensor{t}{_0} - t_0^2}}} \, \right)}}, &\text{if $k = + 1$.}		\end{cases}	\end{equation}\end{document}

Here's a preview of what it does :
radical.jpg (25.48 KiB) Viewed 1158 times

Now, the first radical has a proper size, since I smashed the "0" index, but then the "2" exponent is too close to the horizontal bar. The second radical is too big and there is too much space inside, while the "2" exponent is right.

Take note that smashing each "0" index separately doesn't change anything.

How can I lower the "2" exponent in the first line ?

Tags:

Cham
Posts: 826
Joined: Sat Apr 02, 2011 4:06 pm
Ah ! Removing the \displaystyle{} around the radical and adding \vphantom{1^1} inside seems to fix the problem.

Is there a better way in doing this ?