GNU Octave Commands Quiz

Which command is used to clear all variables in GNU Octave?

• clear all

• remove all

• reset all

• delete all

How do you suppress output in GNU Octave?

• End the statement with ,

• End the statement with ;

• Use the disp function

• Use print

What will x = 1:2:10 produce?

• [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

• [1, 3, 5, 7, 9]

• [1, 2, 4, 6, 8, 10]

• [1, 3, 6, 9]

Which command is used to generate a 2D plot in GNU Octave?

• plot3(x, y, z)

• plot(x, y)

• bar(x, y)

• scatter(x, y)

What does the meshgrid function do in GNU Octave?

• Creates a 3D mesh plot

• Generates a grid of X and Y coordinates

• Sets the axis for a mesh plot

• Computes the derivative of a function

Which command creates a 3D surface plot?

• plot3(x, y, z)

• mesh(x, y, z)

• contour(x, y, z)

• bar3(x, y, z)

What does the hold on; command do?

• Freezes the screen

• Prevents new plots from overwriting existing ones

• Clears the figure window

• Sets the plot color

How do you label the X-axis of a plot?

• xlabel('Time (s)')

• xaxis('Time (s)')

• set_x('Time (s)')

• label_x('Time (s)')

Which of the following is NOT a loop structure in GNU Octave?

• for

• while

• loop

• do-while

Which statement correctly implements an IF condition in GNU Octave?

• if (x > 10) { disp('Greater'); }

• if x > 10 then disp('Greater');

• if (x > 10), disp('Greater'); end

• if x > 10, disp('Greater')