http://mangoroot.com/CalculusI/14
problem no 2 , just need to confirm my answers
help

Question

http://mangoroot.com/CalculusI/14
problem no 2 , just need to confirm my answers
help

ipwnbunnies · Answer

?? I don't know where problem 2 is.

anonymous · Answer

open the link and u will see, it has a graph

ipwnbunnies · Answer

Ok, I got it now. What are your answers?

anonymous · Answer

b and c is 2 and d is yes and a is -1

ipwnbunnies · Answer

A is not c = -1. The derivative does not exist at sharp turns.

anonymous · Answer

ok so a is -1 ?

ipwnbunnies · Answer

No, Part A ask when the derivative = 0. The derivative doesn't exist at c= -1 because there's a sharp turn there.

anonymous · Answer

ok so a is -2 and b is -1 and 2 c is 2 and d is yes ?

ipwnbunnies · Answer

Therefore, -1 should be included with your answer to Part B.
Check out the little curve at the top. There is a point there where the slope of the tangent to the function is 0.

anonymous · Answer

at 3 ?

ipwnbunnies · Answer

Right.

ipwnbunnies · Answer

c = 2 will not be a solution to Part A. The derivative is negative at that point, because the function is decreasing there.

ipwnbunnies · Answer

c = -2*

ipwnbunnies · Answer

Part B is -1 and 2.

anonymous · Answer

ok so answer to a is 3 , yea make sense

ipwnbunnies · Answer

I'm going to say Yes to Part D, not really sure what it is asking though.

anonymous · Answer

ok part C is 2 ?