After specifying four types of intervals, it determines whether the input real number is included in the interval or not.

The endpoints of the intervals are specified in advance by the "dictionary" action at the top of the recipe.

The recipe itself is not important, it is the expression in the "Calculate" action that is used to make the determination that should be of interest.

Use a function such that only the interval (domain of definition) will have a positive value.

■Details(Japanese)