Practical 7: Symbolic Toolbox
Practical 7
Number Format
By default, the Symbolic Toolbox uses integers or rational fractions such as 1, 1/2.
Otherwise, it uses a real number approximation by a fraction of large integers, eg 3333/100000. Command sym(number) converts a number to its symbolic form while double(number) command reverses symbolic representation to MATLAB standard format. Therefore, sym command means ‘switch to Symbolic Toolbox’, while double means ‘switch back to MATLAB’
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> Exercise: Understanding Numerical Formats > For the following numbers, find out their symbolic and standard formats. |
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| Number | Symbolic Command | Standard Command |
| 11/13 | sym 11/13 | double (11/13) |
| 3.85 | ||
| pi | ||
| 0.33333 | ||
| (4/5)2 | sym((4/5)^2 | double ((4/5)^2) |
| 591/2 | ||
| e1 | ||
| sin(1) | ||