Consider the standard feedback look below:

What is the transfer function from r to e ?

Question

Consider the standard feedback look below: 
  
 What is the transfer function from   r  to   e ?

Answer

G_{re}(s) = \frac{1}{1-P(s)C(s)}

Answer

G_{re}(s) = \frac{F(s)P(s)C(s)}{1-P(s)C(s)}

Answer

G_{re}(s) = \frac{F(s)}{1-P(s)C(s)}

Answer

G_{re}(s) = \frac{P(s)C(s)}{1+P(s)C(s)}

Answer

G_{re}(s) = \frac{F(s)P(s)C(s)}{1+P(s)C(s)}

Answer

G_{re}(s) = \frac{F(s)}{1+P(s)C(s)}

Answer

G_{re}(s) = \frac{1}{1+P(s)C(s)}

Answer

G_{re}(s) = \frac{P(s)C(s)}{1-P(s)C(s)}

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