right leftr ectangle businesses

[monokekie]

hello.

just wondering that what's with all this right rectangle and left rectangle approximation business. i left the book at school and couldn't find the essential one at da moment.

if you are asked to use right rectangle to find an area enclosed by a curve do you draw it like this?




could anybody pls clarify it? tkx tkx tkx!!

[TrueTears]

No, right angle is when the RIGHT top corner of the rectangle touches the curve.

[monokekie]

oh i c lol. tkx !!

[monokekie]

oh heyy i am back. haha geez why do monokekie have so many questions

um, if you have something like this
is it left or right?

[Gloamglozer]

Don't you just use:



etc?  Of course you would replace "1" and "2" with the appropriate widths.

[TrueTears]

oh heyy i am back. haha geez why do monokekie have so many questions

um, if you have something like this
(Image removed from quote.) is it left or right?

That is left.

[shinny]

Just look at which corner is touching the curve =\ The definition doesn't change regardless of positive/negative, and really, it isn't meant to be that technical.