poles and zeroes

Hello! I'm trying to analize this block, where a resistor and a capacitor share their terminals: Obviously \[ v_R = v_C = v \] A specific condition may be found (in the Laplace domain) where the net current i = 0. This occurs when the current on the resistor is equal and with opposite sign...

Hi, I have the following zero-pole map I created of my discrete system (see attached picture) but I want to make the poles closer to the origin. Is there any matlab command or another way in which this can be accomplished ? Thanks in advance.