Question

isaiah45798 Neophyte

can i get HELP on the first three problems not looking for answers just help, BTW its calculus http://teachers.tullyschools.org/dneuman/APCalc/APNotes/04December/APDay065MathAppsTest/MathAppsTest.pdf

Answer 1

Well, what areas are you having trouble with on this sheet?

Answer 2

honestly its the terminology, or the wording of the problems, my teacher really dumbed everything down and then out of no where she gives us this, but the first couple problems have been giving me the most trouble

Answer 3

Pick one in particular, do you want to just start with the first problem, or do you have one in mind?

Answer 4

the first one would be great

Answer 5

Actually the first one kind of bothers me, but basically the idea is that there is some function f(x). We don't have the graph to that function in front of us, instead we have its derivative f'(x), which is the sloped of f(x) graphed out.

So can let's start with part b. What is f'(0)?
Hint: You can get the answer directly from the graph.

Answer 6

im guessing 0

Answer 7

Right, because our graph is for f'(x) and you can see visually that this graph is 0 at x=0, so is that greater-than or less-than three?

Harder question: what is the derivative of our graph at x=1, i.e. what is f''(1)?

Answer 8

i would say less than as far as that second part, f"(1), because its asking for the second derivative thats where it gets confusing

Answer 9

the first derivative looks like it might be 4 but...

Answer 10

TURNING TEST DO YOU WANNA HELP ME AGAIN! Btw that lab you helped me on was perfect made so much since! I appreciate it! :)

Answer 11

Remember that our graph is already for the first derivative f'(x), so we only need to think about the first derivative of this graph to find f''(x).

How is the derivative of a function at a point interpreted on a graph? (some terminology should be needed here)

Answer 12

@biohelp
As you can see I'm helping someone, but I will check to see if I can do your stuff as easily as the other, but the last one I saw you posted was stuff I had forgotten.

Answer 13

Oh okay yeah its photosynthesis review and i am like so lost! But your awesome! I and you've helped me tremendously understand :) haha

Answer 14

@isaiah
First bit of terminology: The derivative of a graph at x=a is the SLOPE OF THE TANGENT LINE at that point.

Since we have a graph for f'(x) that means to get an idea of f''(a) we just look at the slope of our graph at x=a.

So what is the slope of our graph at x=1?

Answer 15

so when x is 1 f" is 4?

Answer 16

To me it looks like our graph is doing this at x=1:That is a close-up, and messy I know, but try to draw in the tangent line in for me at x=1.
(click on reply with drawing)

Answer 17

thats where im having trouble, isnt the tangent line parallel to a point on the graph

Answer 18

A line cannot be parallel to a point, only another line.
Just try to draw in the slope at x=1, if you mess up it's okay.