It's from Dorf&bishop...
I don't see how the answer from my book should help here.. Aren't there a general rule for deriving a equation which relate the effect of the inputs to the output of the system.
I could easily derive a formula for the closed loop transfer function and the output...
I am having a hard time understanding how i shall algebraically define the effect of disturbance and noise on a system.
Consider we have a system like this.
Where Td(s) is the disturbance, and N(s) is the noise.
How would shall i define the effect of the disturbance and noise for the...