Write out the equations ∆Y and ∆X

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SUMMARY

The discussion centers on deriving equations for the variables ∆Yt and ∆Xt given the conditions ∆Yt=∆Xt=0. The equations provided are ∆Yt=–0.5(Yt–Y*)+0.3(Xt–X*) and ∆Xt=0.4(Yt–Y*)–0.3(Xt–X*). The user successfully reformulated these equations to –0.5(Yt–Y*)+0.3(Xt–X*) = 0 and 0.4(Yt–Y*)–0.3(Xt–X*) = 0, indicating a clear understanding of the relationship between the endogenous variables Yt, Xt and their steady-state values Y*, X*. The user expressed gratitude for the assistance received in solving the problem.

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Homework Statement



If I am given a couple of equations asking to write out the equations for which ∆Yt=∆Xt=0:

∆Yt=–0.5(Yt–Y*)+0.3(Xt–X*)
∆Xt=0.4(Yt–Y*)–0.3(Xt–X*)

It is also known that Yt and Xt are endogenous and Y* and X* are steady-state values (if this helps).

Any hints on how to proceed?

I started with this:
–0.5(Yt–Y*)+0.3(Xt–X*) = 0
0.4(Yt–Y*)–0.3(Xt–X*) = 0

I just don't know what to do with extra Y* and X*. Any help is greatly appreciated.
 
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