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MathJax LaTeX help...larger bracketing symbols

Petrus

Well-known member
Feb 21, 2013
739
Hello MHB,
I am curious how I can make these "[" "]" bigger in latex cause it does not look nice when I do it. Exemple:
\(\displaystyle [3xy+\frac{3x}{3y}\ln(2)]_{\frac{x^2}{3}}^x\)
Notice just I did just type some number but how can I make it alot nicer in latex cause that does not really look good.

Regards,
 

Opalg

MHB Oldtimer
Staff member
Feb 7, 2012
2,701
Re: Latex help

Hello MHB,
I am curious how I can make these "[" "]" bigger in latex cause it does not look nice when I do it. Exemple:
\(\displaystyle [3xy+\frac{3x}{3y}\ln(2)]_{\frac{x^2}{3}}^x\)
Notice just I did just type some number but how can I make it alot nicer in latex cause that does not really look good.

Regards,
\left[ and \right] will set the size automatically: \(\displaystyle \left[3xy+\frac{3x}{3y}\ln(2)\right]_{\frac{x^2}{3}}^x\).

Alternatively, you can set the size manually, using commands like \Bigl[ and \Bigr], which will give \(\displaystyle \Bigl[3xy+\frac{3x}{3y}\ln(2)\Bigr]_{\frac{x^2}{3}}^x\). The available sizes, in increasing order, are \bigl and \bigr, \Bigl and \Bigr, \biggl and \biggr, \Biggl and \Biggr.
 
Last edited by a moderator:

ZaidAlyafey

Well-known member
MHB Math Helper
Jan 17, 2013
1,667
Re: Latex help

One question , can we just scale up one bracket ?

EDIT , sorry I didn't realize that Opalg already posted that .
 
Last edited by a moderator:

Petrus

Well-known member
Feb 21, 2013
739
Re: Latex help

Thanks evryone for the answer! I will try memorize this method :)


Regards,
 

Evgeny.Makarov

Well-known member
MHB Math Scholar
Jan 30, 2012
2,492
Re: Latex help

\left[ and \right] will set the size automatically: \(\displaystyle \left[3xy+\frac{3x}{3y}\ln(2)\right]_{\frac{x^2}{3}}^x\).
To add to this, there is also \middle:
\[
P\left(A=2\middle|\frac{A^2}{B}>4\right)
\]

and "If a delimiter on only one side of an expression is required, then an invisible delimiter on the other side may be denoted using a period (.)":
\[
\left.\frac{x^3}{3}\right|_0^1
\]
(Wikibooks).
 

MarkFL

Administrator
Staff member
Feb 24, 2012
13,775
Re: Latex help

...
and "If a delimiter on only one side of an expression is required, then an invisible delimiter on the other side may be denoted using a period (.)":
\[
\left.\frac{x^3}{3}\right|_0^1
\]...
Thank you tremendously...I had encountered this problem for example with:

\(\displaystyle \frac{dy}{dx}|_{x=1}\)

where using only the \left command would not render. Now I may write:

\(\displaystyle \left.\frac{dy}{dx} \right|_{x=1}\)

Very helpful tip...most appreciated! (Yes)