2) A non-inverting amplifier was built with theoretical gain of 20 dB using the LF411 op-amp as shown in Fig. (4). The very same expected corner frequency was calculated, along with the same corner frequency measured as in part 1, except this time the voltage is no longer inverted. The same expected corner frequency was also calculated for the TL061 op-amp, however a measure corner frequency was unavailable. The TL061 is insubordinate in working properly with the Elvis II board variable voltage for non-inverting cases while measuring Bode plots, however the function generator and oscilliscope render fruitful evidence that the TL061 is operating to its expected degree of value/accuracy ratio.