Find the one-sided limit, if it exists. 
Definitions:
R
A symbol often used to represent resistance in electrical circuits, measured in ohms.
RC Parallel Circuit
An electrical circuit consisting of a resistor (R) and a capacitor (C) connected in parallel with each other.
RC Parallel Circuit
An electrical circuit configuration consisting of resistors (R) and capacitors (C) connected in parallel, affecting current and voltage differently.
R
Symbol commonly used to denote resistance in electrical circuits, measured in ohms (Ω).
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