MATLAB: Numbers as multiply of pi

displaymathematicsMATLABmatlab functionsymsymbolicSymbolic Math Toolbox

Hi, does anyone know how to tell Matlab it should show a number as a multiply of pi?

Example: atan(sqrt(3)/1) = 1.0472 but I want to see it as pi/3

Thx for the help guys.

Best Answer

atan(sqrt(sym(3))/1)
ans =

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MATLAB: How to create a symbolic integer in the Symbolic Math Toolbox

If you are using the MuPad symbolic engine from Symbolic Toolbox (R2008b) or higher, you can use the ASSUME function from MuPad as follows:

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To remove assumptions from the variable x, you can use the following command:

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If you are using Symbolic Toolbox (R2008a) or before, you will also need the Extended Symbolic Toolbox to do this. The Maple function ASSUME allows you to add assumptions to a symbolic variable. The following example demostrates the creation of a symbolic integer variable:

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The symbolic toolbox does not produce numeric solutions: it produces symbolic solutions where the symbols might be in terms of rational numbers or expressions or numbers that are being stored in symbolic form. For example,

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really does mean 1 x 10^-1 in the symbolic toolbox, by in MATLAB, 0.1 means "the closest number to 0.1 that is representable with a 53 bit binary matissa, which is 0.1000000000000000055511151231257827021181583404541015625

You should examine pi.pi1 to see what it gives you. If you want to approximate the solution in double precision then use double(pi.pi1)

Best Answer

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MATLAB: How to create a symbolic integer in the Symbolic Math Toolbox

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