- #1

Strand9202

- 10

- 2

- Homework Statement
- The problem is below. I was asked to explain what is meant in the circled part.

- Relevant Equations
- None

Here is the problem (8b). I was asked to write out why the circled part was true.

I know that since the function is concave down then f"(x)<0. That is a fact. What I am having trouble with is why they can say the next part.

What I thought was L(x) is the tangent line and all tangent lines are above a concave down function, but not sure that is correct or true.

I know that since the function is concave down then f"(x)<0. That is a fact. What I am having trouble with is why they can say the next part.

What I thought was L(x) is the tangent line and all tangent lines are above a concave down function, but not sure that is correct or true.