[Solved] Identify the error in this MATLAB code snippet:x = 1:4; y = 1:4; Z = x' * y; contour(x, y, Z); — Ans: Z is not a matrix of function values matching the grid defined by x and y | MATLAB

MATLAB - 3D Plotting and Visualization

Identify the error in this MATLAB code snippet:

x = 1:4; y = 1:4; Z = x' * y; contour(x, y, Z);

AZ is not a matrix of function values matching the grid defined by x and y

Bx and y must be row vectors for contour to work

Ccontour requires Z to be a vector, not a matrix

DNo error; the code will produce a valid contour plot

Step-by-Step Solution

Solution:

Step 1: Understand variables
x and y are vectors from 1 to 4; Z is computed as x' * y, resulting in a 4x4 matrix.
Step 2: Check if Z matches grid
contour expects Z to represent function values over a grid defined by meshgrid(x,y). Here, Z is outer product, but x and y are vectors, not grids.
Step 3: Identify error
contour(x,y,Z) requires x and y to be vectors defining axes, but Z must correspond to meshgrid(x,y) values. Without meshgrid, the dimensions mismatch.
Final Answer:
Z is not a matrix of function values matching the grid defined by x and y -> Option A
Quick Check:
Check if Z matches meshgrid(x,y) dimensions [OK]

Quick Trick: Use meshgrid to create X,Y matching Z dimensions [OK]

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