Scale an equation to fit exact page width

Question

I have an equation that is only a tiny bit too wide for one line  I d really like to avoid having the equation number on the next line  How do you achieve this  Currently I m using  small  but this is overkill   Please note  I have tried scalebox and fittowidth but get errors about missing  endgroup  I have also used    to its full extent  I am hoping for a solution that will allow me to scale the proper one-line equation to the width of the page   Here is an example  not my actual equation

User · Accepted Answer

begin equation   resizebox  9 hsize      A B C D E F G H I J K L M N O P Q R S T U V W X Y Z    end equation    or   begin equation   resizebox  8 hsize      A B C D E F G H I J K L M N O P Q R S T U V W X Y Z    end equation

User · Answer

The graphicx package provides the command  resizebox width  height  object     documentclass article   usepackage graphicx   begin document   hrule      makeatletter   setlength   tempdima   the columnwidth   the  well columnwidth  settowidth   tempdimb    ref Equ TooLong     the width of the   1    addtolength   tempdima  - the  tempdimb   which cannot be used for the math  addtolength   tempdima  -1em     There is probably some variable giving the required minimal distance   between math and label  but because I do not know it I used 1em instead   addtolength   tempdima  -1pt   distance must be greater than  1em   xdef Equ width  the  tempdima   space remaining for math  begin equation    resizebox  Equ width       displaystyle   to get everything inside  big   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z      label Equ TooLong    end equation    makeatother       hrule  end document

User · Answer

I just had the situation that I wanted this only for lines exceeding  linewidth  that is  Squeezing long lines slightly  Since it took me hours to figure this out  I would like to add it here      I want to emphasize that scaling fonts in LaTeX is a deadly sin    In nearly every situation  there is a better way  e g  multline of the mathtools package   So use it conscious    In this particular case  I had no influence on the code base apart the preamble and some lines slightly overshooting the page border when I compiled it as an eBook-scaled pdf    usepackage environ            provides  BODY  usepackage etoolbox           provides  ifdimcomp  usepackage graphicx           provides  resizebox   newlength  myl   let origequation  equation  let origendequation  endequation   RenewEnviron equation      settowidth  myl    BODY                           calculate width and save as  myl    origequation    ifdimcomp  the linewidth   gt    the myl      ensuremath  BODY                                 True     resizebox  linewidth      ensuremath  BODY       False    origendequation       Before  After

[latex] Scale an equation to fit exact page width

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