[Tex/LaTex] Trigonometric function script?


Is there a script for the sinc function analogous to \sin for sinus?
If not, what method should I use to insert it in a equation?

Best Answer

Use \DeclareMathOperator{operatorcommandname}{operator name} in the preamble for function or operator names that should be printed upright.




 \si(x) &= \dfrac{\sin(x)}{x}  \\
 \sinc(x) &= \si(\pi x) 

  \int\limits_{-\infty}^{\infty}\si(x)\,\mathrm{d}x &= \pi \\ 
  \int\limits_{-\infty}^{\infty}\sinc(x)\,\mathrm{d}x &= 1 

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