how do i isolate r1?
Vout = r2/(r1+r2) * Vin
Also: Where can i find a simple set of rules for isolating variables in equations of this type?
2007-08-13 09:25:29 · 5 answers · asked by antena 1 in Science & Mathematics ➔ Engineering
first you would divide (r1+r2) by the r2 outside of the parentheses. The r2's would cancel each other out and you are left with
Vout= r1/r2 *Vin. you would then divide both sides of the equation by Vin.
Vout/Vin=r1/r2. Then multiply both sides of the equation by r2.
r2Vout/vin=r1, thus isolating r1
2007-08-13 09:33:23 · answer #1 · answered by John W 2 · 0⤊ 0⤋
If you are writing the equation and even have some limited understanding of what you are writing, then you must have taken Algebra I by now.
Remember what you learned in Algebra I and you will have no problem putting r1 on one side of the equation, and the rest of it on the other side of the equation.
.
2007-08-13 16:36:01 · answer #2 · answered by tlbs101 7 · 0⤊ 0⤋
Its simple algebra
r1 = r2/A -r2
A= Gain; Vo/Vi
2007-08-13 16:29:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Kirchoff's Laws work well for these problems.
2007-08-13 16:29:37 · answer #4 · answered by Del Piero 10 7 · 0⤊ 0⤋
NO CLUE!?!!? SORRIZ!
2007-08-13 16:28:25 · answer #5 · answered by Fredrick 3 · 0⤊ 0⤋