matlab解微分方程出错?iiiiii?

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：综合作业时间：2024/06/22 14:41:46

matlab解微分方程出错?iiiiii?
il =
- (8*C^2*R^4*i - 2*C*L*R^2*i + (2*C*L^2*R^2*i)/(L^2 - 4*C*L*R^2)^(1/2) - (8*C^2*L*R^4*i)/(L^2 - 4*C*L*R^2)^(1/2))/(exp((t*(L + (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(16*C^2*R^4 - 4*C*L*R^2)) - (8*C^2*R^4*i - 2*C*L*R^2*i - (2*C*L^2*R^2*i)/(L^2 - 4*C*L*R^2)^(1/2) + (8*C^2*L*R^4*i)/(L^2 - 4*C*L*R^2)^(1/2))/(exp((t*(L - (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(16*C^2*R^4 - 4*C*L*R^2)) + (exp(t/(2*C*R) - (t*(L^2 - 4*C*L*R^2)^(1/2))/(2*C*L*R))*(2*C*R^2*i + (2*C*R^2*(L - 4*C*R^2)*i)/((L^2 - 4*C*L*R^2)^(1/2) - L + 4*C*R^2)))/(exp((t*(L - (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(L^2 - 4*C*L*R^2)^(1/2)) - (exp(t/(2*C*R) + (t*(L^2 - 4*C*L*R^2)^(1/2))/(2*C*L*R))*(2*C*R^2*i - (2*C*R^2*(L - 4*C*R^2)*i)/(L + (L^2 - 4*C*L*R^2)^(1/2) - 4*C*R^2)))/(exp((t*(L + (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(L^2 - 4*C*L*R^2)^(1/2))

- ((4*C*L*R^2 - L^2)^(1/2) - (L*(4*C*L*R^2 - L^2)^(1/2))/(L^2 - 4*C*L*R^2)^(1/2))/(2*exp((t*(L + (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(L^2 - 4*C*L*R^2)^(1/2)) - ((4*C*L*R^2 - L^2)^(1/2) + (L*(4*C*L*R^2 - L^2)^(1/2))/(L^2 - 4*C*L*R^2)^(1/2))/(2*exp((t*(L - (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(L^2 - 4*C*L*R^2)^(1/2)) + (exp(t/(2*C*R) - (t*(L^2 - 4*C*L*R^2)^(1/2))/(2*C*L*R))*((4*C*L*R^2 - L^2)^(1/2)/2 + (L*i)/2))/(exp((t*(L - (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(L^2 - 4*C*L*R^2)^(1/2)) - (exp(t/(2*C*R) + (t*(L^2 - 4*C*L*R^2)^(1/2))/(2*C*L*R))*(- (4*C*L*R^2 - L^2)^(1/2)/2 + (L*i)/2))/(exp((t*(L + (L^2 - 4*C*L*R^2)^(1/2)))/(2*C*L*R))*(L^2 - 4*C*L*R^2)^(1/2))
我解的结果很正常,有可能你的matlab版本的一些文件出了问题,里面有些符号识别错了或者是有的运算m文件被替换了.把il换成x试一试.

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