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1. Homework Statement [/b]
http://snag.gy/m9Iq0.jpg
I know that the sensistivity of a closed for at small change is given by the formula S = ∂ Ln T/∂ Ln G
And T(s) = G_c(s)G(s)/1 + G_c(s)G(s)
But since i don't have any G_c(s), i don't no how to solve it, and they get the result they get..
http://snag.gy/m9Iq0.jpg
Homework Equations
The Attempt at a Solution
I know that the sensistivity of a closed for at small change is given by the formula S = ∂ Ln T/∂ Ln G
And T(s) = G_c(s)G(s)/1 + G_c(s)G(s)
But since i don't have any G_c(s), i don't no how to solve it, and they get the result they get..