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  1. MHB Apprentice

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    #1
    Feel free to test out the code. I use these nearly anytime I load up a new file in LaTex. They are very simple and easy to use versus typing out the full latex command.


    \usepackage{amsmath}
    \usepackage{amssymb}
    \usepackage{amsthm}
    \newtheorem{definition}{Definition}
    \newtheorem{theorem}{Theorem}
    \newtheorem{lemma}{Lemma}
    %

    % THIS IS THE PLACE FOR YOUR OWN DEFINITIONS
    \newcommand{\oper}[3]{[#1#2](#3)}
    \newcommand{\domain}[1]{\mathcal{D}(#1) \equiv H^1_0(0,1) \cap H^2(0,1)}
    \newcommand{\R}{{\rm I\! R^3_+}}
    \newcommand{\Rn}{{\rm I\! R^n}}
    \newcommand{\Rtwo}{{\rm I\! R^2}}
    \newcommand{\Rfour}{{\rm I\! R^4_+}}
    \newcommand{\e}[1]{e^{-(#1-\,\gamma)^2}}
    \newcommand{\iprod}[2]{\langle#1,#2\rangle}
    \newcommand{\innprod}[3]{\langle#1,#2\rangle _#3}
    \newcommand{\sD}{\mathcal{D}}
    \newcommand{\rint}[2]{\int^{1}_{0}{#1} \,d{#2}}
    \newcommand{\rrint}[3]{\int^{1}_{0}\int^{1}_{0}{#1} \,d{#2}\,d{#3}}
    \newcommand{\der}[1]{\frac{d #1}{dt}}
    \newcommand{\pder}[2]{ \frac{\partial#1}{\partial #2} }
    \newcommand{\secpder}[2]{\frac{\partial^2 #1}{\partial #2^2}}
    \newcommand{\rrrrint}[5]{\int^{1}_{0}\int^{1}_{0}\int^{1}_{0}\int^{1}_{0}{#1} \,d{#2}\,d{#3}\,d{#4}\,d{#5}}
    \newcommand{\p}{p(x,\xi)}
    \newcommand{\Sum}[2]{\sum^N_{j=1}#1#2}
    \newcommand{\norm}[1]{\parallel #1 \parallel}
    %
    % boldface characters in mathematical formulas
    \newcommand{\bff}{\mbox{\boldmath $f$}}
    \newcommand{\bfc}{\mbox{\boldmath $c$}}
    \newcommand{\bfl}{\mbox{\boldmath $l$}}
    \newcommand{\bfn}{\mbox{\boldmath $n$}}
    \newcommand{\bfu}{\mbox{\boldmath $u$}}
    \newcommand{\bfx}{\mbox{\boldmath $x$}}
    \newcommand{\bfy}{\mbox{\boldmath $y$}}
    \newcommand{\bfa}{\mbox{\boldmath $\alpha$}}
    \newcommand{\bfzero}{\mbox{\boldmath $0$}}
    \newcommand{\bfcurl}{{\bf curl}} % curl of a vector field
    \newcommand{\rmdiv}{{\rm div}} % divergence of a vector field
    \newcommand{\eop}{\hfill $\sqcap\!\!\!\!\sqcup$} % end of proof

    - - - Updated - - -

    I can include examples of the code and output if any users fine the definitions helpful.

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  3. MHB Apprentice

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    #2 Thread Author
    An example for the commands below are as follows:

    will edit tomorrow, to tired tonight.\begin{document}
    $\pder{x}{t} = \frac{x}{t}$
    $\der{x} = \frac{dx}{dt}$
    \end{document}
    Last edited by DrWahoo; November 7th, 2017 at 23:28.

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