How many times does this polynomial change signs? f(x) = 3x5 – 2x4 – 6x3 + x2 - 4x – 9
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2. The graph moves up 4 units. (See the blue line in the graph below.)
The domain is unchanged. (The function is still defined for all x.)
The range went from [0, ∞) to [4, ∞), since 4 was added to the minimum value.
Here we can use fact than we can multiply fraction by inverse of fraction instead of dividing it.
Inverse of 1/3 is 3/1
Lets multiply it
- its our result
Inverse of 1/3 is 3/1
Lets multiply it