needing help on [t+2]=4

[lenadj1]

[t+2]=4
please explain

 

[Loren]

Re: needing help

http://www.purplemath.com/modules/absolute.htm

 

[stapel]

[t+2]=4
please explain

Do the brackets mean "greatest integer function", "floor function", "ceiling function", "absolute value" (as the previous tutor guessed), or something else? When you ask for an "explanation", are you saying that you need lessons on this topic?

Thank you!

Eliz.