What Happened in Class today....
Next, thing we learned and was added to our bank of derivatives was the chain rule:
The Chain Rule: [ f 0 g]' (x)= f'(g(x))*g'(x)
That's the Chain Rule, Mr. K didn't prove it to us yet. However checkout this site, this would show us the proof of the chain rule. Also, check this one too, this would also show us the proof of the chain rule.
Lastly, Mr. K showed us what's the derivative of ln x. d/dx lnx=?
e^ln x (d/dx ln x) = 1
x (d/dx ln x) = 1
d/dx ln x = 1/x
Basically, that's all we did today..... The next scribe is CJ.....