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# Using Brackets, Newlines and other

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# Using Brackets, Newlines and other

You can use brackets and newlines in various ways to create order in your equations.

## Parenthesis ()

Parentheses may be used to indicate grouping as in ordinary mathematical notation, e.g.:

u = sin(time*f*2*3.1415 + (a + b)/c );

If a lot of parenthesis are used, it may be hard to see the grouping. You can always put your mouse pointer next to a parenthesis and have the group highlighted.

## Square Brackets []

Square Brackets are used to indicated matrix sizes and matrix elements:

parameters

integer p[6,6] = [1,0,0,0,0,0;0,2,0,0,0,0;0,0,2,0,0,0;0,0,0,5,0,0;0,1,0,0,5,0;0,1,0,0,0,6];

variables

real v[3];

equations

v = p[4:6,6];

## Newlines

Newlines, tabs and white spaces can be used to make your equations more readable. E.g for the parameter example from above we could also write:

parameters

integer p[6,6]; = [

1,0,0,0,0,0;

0,2,0,0,0,0;

0,0,2,0,0,0;

0,0,0,5,0,0;

0,1,0,0,5,0;

0,1,0,0,0,6

];