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UNIT 4 : POLYNOMIAL
FUNCTIONS
POLYNOMIAL FUNCTIONS
TEST
Solutions:
|
x |
y |
|
-3 |
-20 |
|
-2 |
-16 |
|
1 |
20 |
|
x |
y |
|
-4 |
-12 |
|
-3 |
-14 |
|
1 |
-2 |
|
2 |
-1.5 |
|
x |
y |
|
-2 |
32 |
|
1 |
-8 |
|
Interval |
|
|
|
|
|
|
|
Test
Number |
- 4 |
- 2 |
- 0.5 |
0.5 |
3 |
5 |
|
Sign
of x |
( - ) |
( - ) |
( - ) |
( + ) |
( + ) |
( + ) |
|
Sign
of (x + 3) |
( - ) |
( + ) |
( + ) |
( + ) |
( + ) |
( + ) |
|
Sign
of (x – 1) |
( - ) |
( - ) |
( - ) |
( - ) |
( + ) |
( + ) |
|
Sign
of (x – 4) |
( - ) |
( - ) |
( - ) |
( - ) |
( - ) |
( + ) |
|
Sign
of (x + 1) |
( - ) |
( - ) |
( + ) |
( + ) |
( + ) |
( + ) |
|
x(x + 3)(x – 1)/(x – 4)(x + 1) |
( - ) |
( + ) |
( - ) |
(
+ ) |
( - ) |
( + ) |
