我有一个SymPy表达式,以字符串格式看起来像这样:
-t*(a+b+c)/2
当以LaTeX格式(包括笔记本的LaTeX输出)美观地打印时,它太高并且不太容易阅读。
我该如何将分数合并并放在括号前面?像这样:
(-t/2)*(a+b+c)
代码示例:
from sympy import symbols, Function, Derivative, var, init_printing, pprint, latex
init_printing()
def T(y):
var('mu')
return -1 / (2 * mu) * Derivative(y, x, x)
def V(y):
var('x')
V = Function('V', commutative=True)(x)
return V * y
def K(y):
var('x')
K = Function('K', commutative=True)(x)
return K * y
def a1(y):
var('tau', positive=True)
return tau * (T(y) + V(y))
def c(A, B):
def comm(y):
return A(B(y)) - B(A(y))
return comm
var('x')
var('t')
f = Function('psi', commutative=False)
c1k = c(a1, K)
print(latex(c1k(f(x,t)).doit().simplify()))
打印和显示
- \frac{\tau \left(2 \frac{d}{d x} K{\left (x \right )} \frac{\partial}{\partial x} \psi{\left (x,t \right )} + \frac{d^{2}}{d x^{2}} K{\left (x \right )} \psi{\left (x,t \right )}\right)}{2 \mu}
我希望在LaTeX()和Jupyter笔记本中都能看到。
-\frac{\tau}{2}\left(...\right)