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Rewrite the equation in new form: from y = f(k) to k = g(y)

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BINH PHAM
BINH PHAM 2016-12-15
编辑： John D'Errico 2016-12-15
Dear all,
I wonder how to do the following with Mupad:
- If I have an equation like y = (1-delta)/(1+n) + sigma*{(1+alpha)^t}/{(1+n)*k^(1-theta)} where k is variable, i.e, y = f(k). - I want to rewrite in term of variable k, saying, k = ... or k = g(y).
How to do that with Mupad functions. Thank you and best regards,

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John D'Errico
John D'Errico 2016-12-15
编辑：John D'Errico 2016-12-15
In general, you cannot do so. This is what solve does (for the symbolic TB), but it is severely limited, as must be any such tool.
For example, consider the function
y = x^2
There is no single valued function of the form
x = f(y)
for that very simple relationship.

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