To fix the same problem in the noninverting voltage amplifier circuit, we must carefully choose resistors R1 and R2 so that their parallel equivalent equals the source resistance: R1||R2 = Rsource. Of course, we must also be sure the values of R1 and R2 are such that the voltage gain of the circuit is what we want it to be. 1. Prove in the 2nd circuit above noninverting opamp voltage amplifier circuit considering the same bias current Ib from both the inverting and non-inverting terminals, when R1||R2 = Rsource, Vout/Vsource = 1 R2/R1, what  is the expected gain of the non-inverting voltage amplifier. 2. Determine values for R1 and R2 to give a voltage gain of 7 while compensating for a source resistance of 1.45 k