How to solve this implicit equation in matlab?

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ISHA ARORA
ISHA ARORA 2021-10-22
回答： Alan Stevens 2021-10-22
ln [(0.77x-0.77)/(x-0.77)] - (0.23x)/(1-x)-0.0729=0

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回答（1 个）

Alan Stevens
Alan Stevens 2021-10-22
Ran in:
Good idea to plot a graph first, to see roughly where the root lies. Then use fzero. For example::
fn = @(x)log((0.77*x-0.77)./(x-0.77)) - (0.23*x)./(1-x)-0.0729;
x0 = 0.1;
x = fzero(fn,x0);
disp(x)
0.4102
disp(fn(x))
6.9389e-17

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