[Solved] Why does polyfit return coefficients in descending powers of x? — Ans: To match the standard polynomial representation from highest to lowest degree | MATLAB

MATLAB - Numerical Methods

Why does polyfit return coefficients in descending powers of x?

ATo match the standard polynomial representation from highest to lowest degree

BBecause MATLAB stores vectors in descending order

CTo simplify plotting functions

DTo confuse beginners

Step-by-Step Solution

Solution:

Step 1: Recall polynomial standard form
Polynomials are usually written from highest degree term to lowest.
Step 2: polyfit follows this convention
Returning coefficients in descending powers matches this standard.
Final Answer:
To match the standard polynomial representation from highest to lowest degree -> Option A
Quick Check:
polyfit coefficient order matches polynomial standard [OK]

Quick Trick: polyfit coefficients follow standard polynomial order [OK]

Common Mistakes:

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Why does polyfit return coefficients in descending powers of x?