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What interpolation method does interp1 use by default in MATLAB?

easy📝 Conceptual Q1 of 15
MATLAB - Numerical Methods
What interpolation method does interp1 use by default in MATLAB?
ACubic interpolation
BNearest neighbor interpolation
CSpline interpolation
DLinear interpolation
Step-by-Step Solution
Solution:

  1. Step 1: Understand default behavior of interp1

    By default, interp1 uses linear interpolation if no method is specified.

  2. Step 2: Recall interpolation methods

    Nearest, spline, and cubic are other methods but not default.

  3. Final Answer:

    Linear interpolation -> Option D

  4. Quick Check:

    Default method = Linear interpolation [OK]
Quick Trick: Default interp1 method is linear unless specified [OK]
Common Mistakes:
  • Assuming nearest neighbor is default
  • Confusing spline with default
  • Using cubic as default

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