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矩阵的符号我试图指数矩阵在这样指数sympy
from sympy import *
vx1,vx2,vx3,vx4,vx5, vy1,vy2,vy3,vy4,vy5, = symbols('vx1 vx2 vx3 vx4 vx5 vy1 vy2 vy3 vy4 vy5')
vx=Matrix([vx1,vx2,vx3,vx4,vx5])
vy=Matrix([vy1,vy2,vy3,vy4,vy5])
p, n = symbols('p n', integer=True)
vx[0]
vx[1]
vx[2]
vx[3]
summation(p, (p, 0, 4))
summation(vx[p], (p, 0, 4))
求和但好像sympy不能做到这一点:
NameError: IndexError: Invalid index a[p]
有没有办法?
也http://stackoverflow.com/questions/24834447/how-to-create-an-indexed-看variable-in-sympy和http://stackoverflow.com/questions/26402387/sympy-summation-with-indexed-variable – smichr 2014-10-30 14:49:49