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Check for a modifier ending the string. If present, convert the
modifier to latex and translate the rest recursively.
Given a description of a Greek letter or other special character,
return the appropriate latex.
Let everything else pass as given.
>>> from sympy.printing.latex import translate
>>> translate('alphahatdotprime')
"{\\dot{\\hat{\\alpha}}}'"
r T)r$ r N) tex_greek_dictionaryr r greek_letters_set
other_symbolsr r rx r r r )rr r r$ s rs r r x s
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Parameters
==========
full_prec: boolean, optional
If set to True, a floating point number is printed with full precision.
fold_frac_powers : boolean, optional
Emit ``^{p/q}`` instead of ``^{\frac{p}{q}}`` for fractional powers.
fold_func_brackets : boolean, optional
Fold function brackets where applicable.
fold_short_frac : boolean, optional
Emit ``p / q`` instead of ``\frac{p}{q}`` when the denominator is
simple enough (at most two terms and no powers). The default value is
``True`` for inline mode, ``False`` otherwise.
inv_trig_style : string, optional
How inverse trig functions should be displayed. Can be one of
``'abbreviated'``, ``'full'``, or ``'power'``. Defaults to
``'abbreviated'``.
itex : boolean, optional
Specifies if itex-specific syntax is used, including emitting
``$$...$$``.
ln_notation : boolean, optional
If set to ``True``, ``\ln`` is used instead of default ``\log``.
long_frac_ratio : float or None, optional
The allowed ratio of the width of the numerator to the width of the
denominator before the printer breaks off long fractions. If ``None``
(the default value), long fractions are not broken up.
mat_delim : string, optional
The delimiter to wrap around matrices. Can be one of ``'['``, ``'('``,
or the empty string ``''``. Defaults to ``'['``.
mat_str : string, optional
Which matrix environment string to emit. ``'smallmatrix'``,
``'matrix'``, ``'array'``, etc. Defaults to ``'smallmatrix'`` for
inline mode, ``'matrix'`` for matrices of no more than 10 columns, and
``'array'`` otherwise.
mode: string, optional
Specifies how the generated code will be delimited. ``mode`` can be one
of ``'plain'``, ``'inline'``, ``'equation'`` or ``'equation*'``. If
``mode`` is set to ``'plain'``, then the resulting code will not be
delimited at all (this is the default). If ``mode`` is set to
``'inline'`` then inline LaTeX ``$...$`` will be used. If ``mode`` is
set to ``'equation'`` or ``'equation*'``, the resulting code will be
enclosed in the ``equation`` or ``equation*`` environment (remember to
import ``amsmath`` for ``equation*``), unless the ``itex`` option is
set. In the latter case, the ``$$...$$`` syntax is used.
mul_symbol : string or None, optional
The symbol to use for multiplication. Can be one of ``None``,
``'ldot'``, ``'dot'``, or ``'times'``.
order: string, optional
Any of the supported monomial orderings (currently ``'lex'``,
``'grlex'``, or ``'grevlex'``), ``'old'``, and ``'none'``. This
parameter does nothing for `~.Mul` objects. Setting order to ``'old'``
uses the compatibility ordering for ``~.Add`` defined in Printer. For
very large expressions, set the ``order`` keyword to ``'none'`` if
speed is a concern.
symbol_names : dictionary of strings mapped to symbols, optional
Dictionary of symbols and the custom strings they should be emitted as.
root_notation : boolean, optional
If set to ``False``, exponents of the form 1/n are printed in fractonal
form. Default is ``True``, to print exponent in root form.
mat_symbol_style : string, optional
Can be either ``'plain'`` (default) or ``'bold'``. If set to
``'bold'``, a `~.MatrixSymbol` A will be printed as ``\mathbf{A}``,
otherwise as ``A``.
imaginary_unit : string, optional
String to use for the imaginary unit. Defined options are ``'i'``
(default) and ``'j'``. Adding ``r`` or ``t`` in front gives ``\mathrm``
or ``\text``, so ``'ri'`` leads to ``\mathrm{i}`` which gives
`\mathrm{i}`.
gothic_re_im : boolean, optional
If set to ``True``, `\Re` and `\Im` is used for ``re`` and ``im``, respectively.
The default is ``False`` leading to `\operatorname{re}` and `\operatorname{im}`.
decimal_separator : string, optional
Specifies what separator to use to separate the whole and fractional parts of a
floating point number as in `2.5` for the default, ``period`` or `2{,}5`
when ``comma`` is specified. Lists, sets, and tuple are printed with semicolon
separating the elements when ``comma`` is chosen. For example, [1; 2; 3] when
``comma`` is chosen and [1,2,3] for when ``period`` is chosen.
parenthesize_super : boolean, optional
If set to ``False``, superscripted expressions will not be parenthesized when
powered. Default is ``True``, which parenthesizes the expression when powered.
min: Integer or None, optional
Sets the lower bound for the exponent to print floating point numbers in
fixed-point format.
max: Integer or None, optional
Sets the upper bound for the exponent to print floating point numbers in
fixed-point format.
diff_operator: string, optional
String to use for differential operator. Default is ``'d'``, to print in italic
form. ``'rd'``, ``'td'`` are shortcuts for ``\mathrm{d}`` and ``\text{d}``.
adjoint_style: string, optional
String to use for the adjoint symbol. Defined options are ``'dagger'``
(default),``'star'``, and ``'hermitian'``.
Notes
=====
Not using a print statement for printing, results in double backslashes for
latex commands since that's the way Python escapes backslashes in strings.
>>> from sympy import latex, Rational
>>> from sympy.abc import tau
>>> latex((2*tau)**Rational(7,2))
'8 \\sqrt{2} \\tau^{\\frac{7}{2}}'
>>> print(latex((2*tau)**Rational(7,2)))
8 \sqrt{2} \tau^{\frac{7}{2}}
Examples
========
>>> from sympy import latex, pi, sin, asin, Integral, Matrix, Rational, log
>>> from sympy.abc import x, y, mu, r, tau
Basic usage:
>>> print(latex((2*tau)**Rational(7,2)))
8 \sqrt{2} \tau^{\frac{7}{2}}
``mode`` and ``itex`` options:
>>> print(latex((2*mu)**Rational(7,2), mode='plain'))
8 \sqrt{2} \mu^{\frac{7}{2}}
>>> print(latex((2*tau)**Rational(7,2), mode='inline'))
$8 \sqrt{2} \tau^{7 / 2}$
>>> print(latex((2*mu)**Rational(7,2), mode='equation*'))
\begin{equation*}8 \sqrt{2} \mu^{\frac{7}{2}}\end{equation*}
>>> print(latex((2*mu)**Rational(7,2), mode='equation'))
\begin{equation}8 \sqrt{2} \mu^{\frac{7}{2}}\end{equation}
>>> print(latex((2*mu)**Rational(7,2), mode='equation', itex=True))
$$8 \sqrt{2} \mu^{\frac{7}{2}}$$
>>> print(latex((2*mu)**Rational(7,2), mode='plain'))
8 \sqrt{2} \mu^{\frac{7}{2}}
>>> print(latex((2*tau)**Rational(7,2), mode='inline'))
$8 \sqrt{2} \tau^{7 / 2}$
>>> print(latex((2*mu)**Rational(7,2), mode='equation*'))
\begin{equation*}8 \sqrt{2} \mu^{\frac{7}{2}}\end{equation*}
>>> print(latex((2*mu)**Rational(7,2), mode='equation'))
\begin{equation}8 \sqrt{2} \mu^{\frac{7}{2}}\end{equation}
>>> print(latex((2*mu)**Rational(7,2), mode='equation', itex=True))
$$8 \sqrt{2} \mu^{\frac{7}{2}}$$
Fraction options:
>>> print(latex((2*tau)**Rational(7,2), fold_frac_powers=True))
8 \sqrt{2} \tau^{7/2}
>>> print(latex((2*tau)**sin(Rational(7,2))))
\left(2 \tau\right)^{\sin{\left(\frac{7}{2} \right)}}
>>> print(latex((2*tau)**sin(Rational(7,2)), fold_func_brackets=True))
\left(2 \tau\right)^{\sin {\frac{7}{2}}}
>>> print(latex(3*x**2/y))
\frac{3 x^{2}}{y}
>>> print(latex(3*x**2/y, fold_short_frac=True))
3 x^{2} / y
>>> print(latex(Integral(r, r)/2/pi, long_frac_ratio=2))
\frac{\int r\, dr}{2 \pi}
>>> print(latex(Integral(r, r)/2/pi, long_frac_ratio=0))
\frac{1}{2 \pi} \int r\, dr
Multiplication options:
>>> print(latex((2*tau)**sin(Rational(7,2)), mul_symbol="times"))
\left(2 \times \tau\right)^{\sin{\left(\frac{7}{2} \right)}}
Trig options:
>>> print(latex(asin(Rational(7,2))))
\operatorname{asin}{\left(\frac{7}{2} \right)}
>>> print(latex(asin(Rational(7,2)), inv_trig_style="full"))
\arcsin{\left(\frac{7}{2} \right)}
>>> print(latex(asin(Rational(7,2)), inv_trig_style="power"))
\sin^{-1}{\left(\frac{7}{2} \right)}
Matrix options:
>>> print(latex(Matrix(2, 1, [x, y])))
\left[\begin{matrix}x\\y\end{matrix}\right]
>>> print(latex(Matrix(2, 1, [x, y]), mat_str = "array"))
\left[\begin{array}{c}x\\y\end{array}\right]
>>> print(latex(Matrix(2, 1, [x, y]), mat_delim="("))
\left(\begin{matrix}x\\y\end{matrix}\right)
Custom printing of symbols:
>>> print(latex(x**2, symbol_names={x: 'x_i'}))
x_i^{2}
Logarithms:
>>> print(latex(log(10)))
\log{\left(10 \right)}
>>> print(latex(log(10), ln_notation=True))
\ln{\left(10 \right)}
``latex()`` also supports the builtin container types :class:`list`,
:class:`tuple`, and :class:`dict`:
>>> print(latex([2/x, y], mode='inline'))
$\left[ 2 / x, \ y\right]$
Unsupported types are rendered as monospaced plaintext:
>>> print(latex(int))
\mathtt{\text{}}
>>> print(latex("plain % text"))
\mathtt{\text{plain \% text}}
See :ref:`printer_method_example` for an example of how to override
this behavior for your own types by implementing ``_latex``.
.. versionchanged:: 1.7.0
Unsupported types no longer have their ``str`` representation treated as valid latex.
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This function generates a LaTeX equation with a multiline right-hand side
in an ``align*``, ``eqnarray`` or ``IEEEeqnarray`` environment.
Parameters
==========
lhs : Expr
Left-hand side of equation
rhs : Expr
Right-hand side of equation
terms_per_line : integer, optional
Number of terms per line to print. Default is 1.
environment : "string", optional
Which LaTeX wnvironment to use for the output. Options are "align*"
(default), "eqnarray", and "IEEEeqnarray".
use_dots : boolean, optional
If ``True``, ``\\dots`` is added to the end of each line. Default is ``False``.
Examples
========
>>> from sympy import multiline_latex, symbols, sin, cos, exp, log, I
>>> x, y, alpha = symbols('x y alpha')
>>> expr = sin(alpha*y) + exp(I*alpha) - cos(log(y))
>>> print(multiline_latex(x, expr))
\begin{align*}
x = & e^{i \alpha} \\
& + \sin{\left(\alpha y \right)} \\
& - \cos{\left(\log{\left(y \right)} \right)}
\end{align*}
Using at most two terms per line:
>>> print(multiline_latex(x, expr, 2))
\begin{align*}
x = & e^{i \alpha} + \sin{\left(\alpha y \right)} \\
& - \cos{\left(\log{\left(y \right)} \right)}
\end{align*}
Using ``eqnarray`` and dots:
>>> print(multiline_latex(x, expr, terms_per_line=2, environment="eqnarray", use_dots=True))
\begin{eqnarray}
x & = & e^{i \alpha} + \sin{\left(\alpha y \right)} \dots\nonumber\\
& & - \cos{\left(\log{\left(y \right)} \right)}
\end{eqnarray}
Using ``IEEEeqnarray``:
>>> print(multiline_latex(x, expr, environment="IEEEeqnarray"))
\begin{IEEEeqnarray}{rCl}
x & = & e^{i \alpha} \nonumber\\
& & + \sin{\left(\alpha y \right)} \nonumber\\
& & - \cos{\left(\log{\left(y \right)} \right)}
\end{IEEEeqnarray}
Notes
=====
All optional parameters from ``latex`` can also be used.
eqnarrayz\begin{eqnarray}
z& = &z \nonumberz
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