Figure 2.6 shows an integrator. P5.1 Write a frequency domain expression for H(s)=vo/vi in terms of R1, C, and complex frequency s. Let s=j and plot the magnitude |vo/vi| versus . P5.2 Over what range of frequencies does the lowpass filter transfer function from P4.1 "look like" that of the ideal integrator? P5.3 Write a time domain expression for the integrator output in terms of R1, C, and time t