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In MATLAB, after using hold on, what happens if you call plot() again?

easy📝 Conceptual Q1 of 15
MATLAB - 2D Plotting
In MATLAB, after using hold on, what happens if you call plot() again?
AThe new plot is added to the existing figure without erasing previous plots.
BThe previous plots are erased and replaced by the new plot.
CMATLAB throws an error because multiple plots are not allowed.
DThe figure window closes automatically.
Step-by-Step Solution
Solution:
  1. Step 1: Understand the effect of hold on

    The hold on command tells MATLAB to keep the current plot and all its properties so that new plots are added to the same figure.
  2. Step 2: Effect of calling plot() after hold on

    When you call plot() again, MATLAB adds the new plot to the existing figure without deleting the old plots.
  3. Final Answer:

    The new plot is added to the existing figure without erasing previous plots. -> Option A
  4. Quick Check:

    hold on keeps plots visible = A [OK]
Quick Trick: Use hold on to add plots without erasing [OK]
Common Mistakes:
  • Thinking hold on replaces old plots
  • Expecting an error when plotting multiple lines
  • Assuming figure closes automatically

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