[理工] [工數]-請問小技巧
譬如說
2(2s+3)/(s-1)(s+2)s^2
=A/s^2 + B/s + C/(s-1) + D/(s+2)
解C要代1去求 可得到10/3
解D要代-2去求 可得到1/6
那要解A和B呢???
謝謝
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