You want to create a 2x2 grid of plots showing sine waves with different frequencies. Which code correctly sets up the subplots and plots the waves?

hard📝 Application Q15 of 15

MATLAB - 2D Plotting

Asubplot(2,2); for k = 1:4 plot(sin(k*x)); end

Bfor k = 1:4 subplot(4,1,k); x = linspace(0,2*pi,100); plot(x, sin(k*x)); end

Cfor k = 1:4 subplot(2,2,k); x = linspace(0,2*pi,100); plot(x, sin(k*x)); end

Dfor k = 1:4 subplot(2,2,k+1); x = linspace(0,2*pi,100); plot(x, sin(k*x)); end

Step-by-Step Solution

Solution:

Step 1: Set up correct subplot grid
subplot(2,2,k) correctly creates a 2x2 grid and selects each panel from 1 to 4.
Step 2: Plot sine waves with increasing frequency
Inside the loop, x is defined and sin(k*x) is plotted in each subplot panel.
Step 3: Check other options for errors
for k = 1:4 subplot(4,1,k); x = linspace(0,2*pi,100); plot(x, sin(k*x)); end uses 4x1 grid, not 2x2. subplot(2,2); for k = 1:4 plot(sin(k*x)); end calls subplot once without panel index. for k = 1:4 subplot(2,2,k+1); x = linspace(0,2*pi,100); plot(x, sin(k*x)); end uses k+1 which causes invalid panel 5.
Final Answer:
for k = 1:4 subplot(2,2,k); x = linspace(0,2*pi,100); plot(x, sin(k*x)); end -> Option C
Quick Check:
Loop with subplot(2,2,k) plots 4 panels correctly [OK]

Quick Trick: Use subplot(2,2,k) inside loop k=1 to 4 [OK]

Common Mistakes:

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