A guess is an attempt to give the right answer when you are not certain if you are correct. Irr函数包含(value,guess) 属于 非线性方程,求出值有可能包含2个或多个值,另外excel并非专业数学计算软件,无法直接算出输入,运用的是 牛顿迭代法 计算内部收益率,需要给出一.
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