engineering mat lab
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Test Your MATLAB Knowledge for the MathWorks Certified MATLAB Associate Exam
Which command will return the corner elements of a 10-by-10 matrix A?
A. A([1,end], [1,end])
B. A([1,1], [end,end])
C. A({[1,1], [1,end], [end,1], [end,end]})
D. A(1:end, 1:end)
Which command will return the fraction of positive numbers in a 10-by-10 matrix A?
A. A(A > 0)/A
B. numel(A > 0)/numel(A)
C. sum(A > 0)/prod(size(A))
D. nnz(A > 0)/numel(A)
Which command will delete (completely remove) the last cell of a cell-array C?
A. C{end} = [];
B. C[end] = [];
C. C(end) = [];
D. C{end} = {[]};
Which command will create a plot of acceleration vs. time (i.e., a vector time on the x-axis and a vector acceleration on the y-axis)?
A. plot(time, acceleration)
B. plot(acceleration, time)
C. plot([time, acceleration])
D. plot([acceleration, time])
Which command will give the standard deviation for each column in a 10-by-5 matrix Z?
A. std(Z(:))
B. std(std(Z))
C. std(Z(1:5, :))
D. std(Z)
Nº del proyecto: #17920013
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