Sunday, September 26, 2010

blog 5

well this week we learned chain rule. im not absolutely sure im doin it right but im givin it a shot.

the formula for chain rule is: dy/dx [f(g(x))] = f ' (g(x)) * g ' (x)

for example: 3x + 2tan(3x)^2

3 + (4sec^2(3x))(18x)

3 + 72sec^2(3x)

and i think thats all...

as a side note, we also learned quotient rule

the formula for quotient rule is: dy/dx [f(x)/g(x)] = ((g(x))(f '(x)) - (f(x))(g'(x))) / (g (x))^2

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