To understand how a differentiator shapes its output, which parts of the pulse response must be analyzed?

Introduction / Context:
Differentiators emphasize changes in the input signal. For pulse waveforms, the output is dominated by edge behavior, but the inter-edge interval also affects baseline and droop. This question probes comprehensive reasoning about the entire pulse cycle.

Given Data / Assumptions:

• First-order RC or RL differentiator operating on rectangular pulses.
• Finite time constants and practical component values.

Concept / Approach:
The output to a pulse includes a positive spike at the rising edge (for standard polarity), a transient settling toward baseline between edges (with exponential decay governed by time constant), and a negative spike at the falling edge. Ignoring any portion yields an incomplete understanding of amplitude, symmetry, and baseline shift.

Step-by-Step Solution:

Verification / Alternative check:
Time-domain convolution (input with differentiator impulse response) or Laplace-domain multiplication (H(s) with input step pairs) shows contributions at each interval, confirming all segments matter to the net waveform.

Why Other Options Are Wrong:

• Considering only one edge or only the middle interval misses essential dynamics; all three regions determine output symmetry, amplitude, and baseline.

Common Pitfalls:

• Assuming ideal impulses with zero-width edges, which hides practical finite-time constant effects.
• Neglecting recovery time between edges, leading to baseline shift and distortion.

Final Answer:
All of the above