Hello,

I have the following problem. There are known dependencies between variables.

The desired quantity is d. In this simple case it can be easily expressed using C1, C2, C, d1, d2. The solution is following

But I am confused with the similar, but a bit more complex problem.

The known dependencies between variables are following

t - time index.

The desired quantity is .

The goal is to express

using C1, C2, C, d1, d2, a1 and a2. The solution of the equation seems cumbersome. Is it possible to reduce the resulting formula to elegant form, which would resemble ?