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sage 添加积分上下限以后为什么无法得出数值解?
Hlianbobo
·
Sep 20, 2020
· 1421 views
This topic created in 2048 days ago, the information mentioned may be changed or developed.
n,x=var('n x')
latex(integral(((x^2)/4)*cos(n*x),x,-pi,pi))
请看上述代码。求解出来的积分还是带着 pi 的,而且没有代入上限值 去减下限。就是把 pi 代入表达式而已。
为什么不直接给出数值解?
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