Switch

evaluates expr, then compares it with each of the

in turn, evaluating and returning the

corresponding to the first match found.

Only the corresponding to the first that matches expr is evaluated. Each is evaluated only when the match is tried.

If the last is the pattern , then the corresponding is always returned if this case is reached.

Process Boolean value to 1 or 0, giving a message and defaulting to 0 when not Boolean:

Give a suggested symbolic transformation for an expression:

Try the transformation:

Process Boolean value to 1 or 0, giving a message and defaulting to 0 when not Boolean:

Out[3]=

Give a suggested symbolic transformation for an expression:

Out[2]=

Try the transformation:

Out[3]=