LaTeX forum ⇒ Math & ScienceNo numbering for equations

Information and discussion about LaTeX's math and science related features (e.g. formulas, graphs).
LatexBeginnerrrr
Posts: 8
Joined: Sun Apr 28, 2019 2:15 am

No numbering for equations

Postby LatexBeginnerrrr » Tue Apr 30, 2019 12:32 am

Hello everyone

I am trying to figure out how to delete the automatic numbers - (1), (2)... - that appear next to my equations. I read somewhere I should use \begin{align*} ... \end{align*} instead of \begin{equation} ... \end{equation}, but that ruins my fractions.
This is what I put in LaTeX:
  1. We krijgen voor het SIR-model de volgende set differentiaalvergelijkingen:
  2. \begin{equation}
  3. \frac{dS(t)}{dt} = -\beta.(\frac{S(t)}{P}).I(t) + \alpha R(t) + \mu (P-S(t))
  4. \end{equation}
  5. \begin{equation}
  6. \frac{dI(t)}{dt} = \beta.(\frac{S(t)}{P}).I(t) - \gamma I(t) - \mu I(t)
  7. \end{equation}
  8. \begin{equation}
  9. \frac{dR(t)}{dt} = \gamma.I(t) - \alpha R(t) - \mu R(t)
  10. \end{equation}

Does anyone know how to fix this?
Thank you very much.

user22741
Posts: 33
Joined: Fri Nov 09, 2018 12:03 pm

Postby user22741 » Tue Apr 30, 2019 1:03 am

  1. \[
  2. \frac{dS(t)}{dt} = -\beta.(\frac{S(t)}{P}).I(t) + \alpha R(t) + \mu (P-S(t))
  3. \]

User avatar
Johannes_B
Site Moderator
Posts: 4004
Joined: Thu Nov 01, 2012 4:08 pm

Postby Johannes_B » Tue Apr 30, 2019 6:50 am

I would use gather.
  1. \documentclass{article}
  2. \usepackage{mathtools}
  3. \begin{document}
  4. \begin{gather*}
  5. \frac{dS(t)}{dt} = -\beta.(\frac{S(t)}{P}).I(t) + \alpha R(t) + \mu (P-S(t))\\
  6. \frac{dI(t)}{dt} = \beta.(\frac{S(t)}{P}).I(t) - \gamma I(t) - \mu I(t)\\
  7. \frac{dR(t)}{dt} = \gamma.I(t) - \alpha R(t) - \mu R(t)
  8. \end{gather*}
  9. \end{document}
The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.


Return to “Math & Science”

Who is online

Users browsing this forum: No registered users and 2 guests