Respuesta :
[tex]E = \left\{(a,b) \mid a \in I \text{ and } b \in R \right\}[/tex], [tex]P = \left\{(a,b) \mid a \in E \text{ and } b \in R \right\}[/tex] but we cannot solve for the set [tex]E[/tex] because we are missing information.
E =IR
P = EI
solve for I by dividing both sides by E
P/E = I
E = IR
substitute for I
E = (P/E) *R
Multiply both sides by E
E^2 = RP
take the square root of each side
E= sqrt (PR)