| |
| |
1. |
Approximate the real zero of f(x) = x3 + x + 1 to the nearest tenth. |
| |
|
A. |
0.3 |
B. |
-0.7 |
| |
|
C. |
-1.3 |
D. |
-1.0 |
| |
|
Hint |
|
| |
2. |
Approximate the real zero of g(x) = x5 - x2 - 1 to the nearest tenth. |
| |
|
A. |
1.1 |
B. |
1.2 |
| |
|
C. |
1.0 |
D. |
0.9 |
| |
|
Hint |
|
| |
3. |
Approximate the real zero of h(x) = 2x4 - 3x2 + x + 1 to the nearest tenth. |
| |
|
A. |
-1.3, -0.5 |
B. |
-1.5, 0.9 |
| |
|
C. |
1.6 |
D. |
-0.3 |
| |
|
Hint |
|
| |
4. |
Graph  . Then estimate the coordinates at which the relative maxima and relative minima occur. |
| |
|
A. |
minimum: –3,maximum: 1 |
B. |
minimum: 1,maximum: –5 |
| |
|
C. |
minimum: 1, maximum: –3 |
D. |
minimum: –5,maximum: 1 |
| |
|
Hint |
|
| |
5. |
Find consecutive values of x between which each real zero of the function  is located. |
| |
|
A. |
–1 and 0, 0 and 1, and 1 and 2 |
B. |
–1 and 0, 1 and 2 |
| |
|
C. |
0 and 1, 1 and 2 |
D. |
–1 and 0, 0 and 1 |
| |
|
Hint |
|
|
|