### All AP Calculus AB Resources

## Example Questions

### Example Question #1 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

What is the concavity of at x=1?

**Possible Answers:**

Concave Diagonal

No Concavity

Concave Up

Concave Horizontal

Concave Down

**Correct answer:**

Concave Up

Explanation:

First, find the double derivative of the function given.

You should get .

Next, plug in x=1 to get .

The double derivative is a positive number, which means the concavity is Concave Up.

### Example Question #2 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

Find the second derivative.

**Possible Answers:**

**Correct answer:**

Explanation:

We need to find the second derivative. To do this we will use power rule twice. We will take the first derivative by power rule, then the second derivative by power rule once again. Power rule says that we take the exponent of the “x” value and bring it to the front. Then we subtract one from the exponent.

Therefore, the first derivative is and the second derivative is by power rule.

### Example Question #3 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### Example Question #4 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### Example Question #5 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### Example Question #6 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### Example Question #7 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### Example Question #8 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### Example Question #9 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### Example Question #10 : Relationship Between The Concavity Of ƒ And The Sign Of ƒ''

**Possible Answers:**

**Correct answer:**

Explanation:

### All AP Calculus AB Resources

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