Approximation by left rectangles and right rectangles

[NE2000]

It's on the study design, has anyone from last year ever come across a past paper where this is the required method to calculate the area under the graph?

[shinny]

I definitely recall there being a Tasmania Jones question involving this so yes, do learn it if that's what you're wondering.

[NE2000]

I definitely recall there being a Tasmania Jones question involving this so yes, do learn it if that's what you're wondering.

yep OK thanks, it wasn't so much whether I was going to learn it and do the exercise but more whether I was going to worry about organizing the setting out of my answers and whether I was going to do more stuff on it later on...and if there's been a question on it I guess I better do

[shinny]

I usually just have something along the lines of (making up numbers here);
, and then just simplify as you go down, or just go straight to the answer in your next step. Showing arithmetic isn't really required, but I'd advise it to prevent stupid mistakes anyway.

Basically, make a separate bracket for each rectangle. It keeps your working out much clearer which also avoids mistakes. Oh, and try and remember the symbol, although I doubt you'll lose a mark for it.

[/0]

Rectangle approximation is in practically every paper, I remember half of one of my SACs was on it.

[Edmund]

They are in Exam 2 multi choice VCAA papers

also, they were plenty in my 2008 trial exam, which was the heffernan paper i believe