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# function making input twice

### tushar kataria (view profile)

calculate double of a number by just passing the number in the argument of the function

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the problem solved by this is just multiplication of a variable by 2 ..

MATLAB release MATLAB 8.0 (R2012b)
26 Mar 2013 Owen Brimijoin

### Owen Brimijoin (view profile)

There are other ways of solving this problem. I have here a humble suggestion:

function y = myfun(x)
tic;
pause(2*x)
y = toc;

Note that for large values of x, this may take some time to execute. It also may not return a precise value.

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26 Mar 2013 Eric

### Eric (view profile)

Thanks for this wonderful submission. I had no idea Matlab could perform multiplication! For years I've been saving variables to spreadsheets, multiplying them in Excel, and then importing them back to Matlab. I shudder at the countless hours I've wasted when I could have just done this work in Matlab. Thanks again.

26 Mar 2013 John D'Errico

### John D'Errico (view profile)

Give me a break. And such a creative name for the function, my fun. Useless.

26 Mar 2013 Jan Simon

### Jan Simon (view profile)

Why do you think, that this function is useful for others? Multiplying a variable by 2 should not be done in a function, but directly in the code.

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