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Boundaries of an interval : left right

left (resp right) takes as argument an interval.
left (resp right) returns the left (resp right) boundary of this interval.
Note that .. is an infixed operator, therefore:
• sommet(1..5) is equal to '..' and feuille(1..5) is equal to (1,5).
• the name of the interval followed by [0] returns the operator ..
• the name of the interval followed by [1] (or the left command) returns the left boundary.
• The name of the interval followed by [2] (or the right command) returns the right boundary.
Input :
(3..5)[0]
Or :
sommet(3..5)
Output :
'..'
Input :
left(3..5)
Or :
(3..5)[1]
Or :
feuille(3..5)[0]
Or :
op(3..5)[0]
Output :
3
Input :
right(3..5)
Or :
(2..5)[2]
Or :
feuille(3..5)[1]
Or :
op(3..5)[1]
Output :
5
Remark
left (resp right) returns also the left (resp right) member of an equation (for example left(2*x+1=x+2) returns 2*x+1).

suivant: Center of an interval monter: Intervals précédent: Definition of an interval   Table des matières   Index
giac documentation written by Renée De Graeve and Bernard Parisse