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关于求psi（10*x)中x的方法。
这很有意思，psi应该是不接受负数作参数的吧？ 用s=solve('psi(10*x)-0.2085=0','x')可以算出来 s = -226.98740242646891529702242417634 但是psi(10*(-226.98...
3 years ago | 0
| accepted
