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Computation版 - Excel 能否写个 equation with an independent variable (转载)
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发帖数: 155
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【 以下文字转载自 Statistics 讨论区 】
发信人: VlP (VlP), 信区: Statistics
标 题: Excel 能否写个 equation with an independent variable
发信站: BBS 未名空间站 (Thu Sep 5 07:05:24 2013, 美东)
比如我有: A1=2, A2=x, A3=6, A1*A2=A6
正常情况下,我可以用 A3/A1 来得到 x 的值,但是我想用一种像calculator那种的输
入求解,类似这样的 f ( x, A1 * x = A3 ) . An equation A1 * x = A3 with
independent variable x, and solve for x.
我需要在excel 的一个 cell输入x的值(A1和A3是随时需要变化的,所以x的值也会随
着变化),我不是不想用 A3/A1 这样的formula ,而是因为formula太太复杂,如果我
写一个equation,再求求x的formula,很容易出现 algebra mistake,太长太复杂的
equation了,一张A4 landscape 都要写上两三行,也就是超过22“,而且equation左
右多处有这个x。
所以直接写个formula很难写,我需要写个equation with a variable x, and let the
equation solve for x.
Thanks.
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