1. grneral solution:fundermental set of solution 基础解系 | grneral solution 通解 | Gram-Schmidt process 施密特正交化过程
2. complementary-function solution:替代定理 substitution theorem | 通解 complementary-function solution | 通频带宽度 pass-band width
3. 通解什么意思
3. homogeneous solution:ordinary differential equation 常微分方程 | homogeneous solution 通解 | particular solution 特解