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okay can u show it?

|dw:1362594670556:dw| how will i draw it on here?

|dw:1362595003756:dw|Let's draw some tangent lines to get a feel for what is going on

ok

okay

okay

|dw:1362595320296:dw|How about this tangent line, what is it's value?

what is the slope of this tangent line i mean*

|dw:1362595394811:dw|yes good. so the VALUE of our derivative will be 0.

okay

okay

Ok let's draw a line connecting these points.

|dw:1362595554967:dw|I had to fix a couple of the dots :) lol

okay that makes sense now

So how about the second derivative. Hmmm

it will be horizontal

|dw:1362595623497:dw|

yes

ok

okay thanks