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等式 1
等式 2
FREQ = 1:1000; P = 1i * (2 * pi * FREQ);
常数值和状态变量方程
对于这个特定问题,强制函数 P 是频率相关的。它将感动群众。如何实现 ODE45 来求解频率为变化条件的方程?(忽略图 3 中 P 的值。)