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Explain difference between command and function syntax
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@ -37,8 +37,8 @@ clc % Erases the writing on your Command Window
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diary % Toggle writing Command Window text to file
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ctrl-c % Abort current computation
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edit('myfunction.m') % Open function in editor
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type('myfunction.m') % Print the source of function to Command Window
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edit('myfunction.m') % Open function/script in editor
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type('myfunction.m') % Print the source of function/script to Command Window
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profile viewer % Open profiler
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@ -62,6 +62,17 @@ myVariable = 4; % Semi colon suppresses output to the Command Window
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a = 2; b = 3;
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c = exp(a)*sin(pi/2) % c = 7.3891
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% Calling functions can be done in either of two ways:
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% Standard function syntax:
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load('myFile.mat', 'y')
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% Command syntax:
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load myFile.mat y % no parentheses, and spaces instead of commas
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% Note the lack of quote marks in command form: inputs are always passed as
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% literal text - cannot pass variable values. Also, can't reveive output:
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[V,D] = eig(A) % this has no equivalent in command form
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% Logicals
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1 > 5 % ans = 0
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10 >= 10 % ans = 1
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@ -384,8 +395,10 @@ NaN
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inf
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% Solving matrix equations (if no solution, returns a least squares solution)
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% The \ and / operators are equivalent to the functions mldivide and mrdivide
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x=A\b % Solves Ax=b. Faster and more numerically accurate than using inv(A)*b.
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x=b/A % Solves xA=b
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inv(A) % calculate the inverse matrix
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pinv(A) % calculate the pseudo-inverse
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