A step function h(x) is represented by y = –2⌊x⌋. Which phrase best describes the range of the function h(x)?
The value of step function is an integer number from negative infinity to positive infinity. So the phrase is "all the integer numbers, Z".
Answer:
The range of the function h(x) is all even integers.
Step-by-step explanation:
Range is the set of outputs and y values.
It is given that the function h(x) is represented by y = –2⌊x⌋.
Here, ⌊x⌋ represent the greatest integer function.
The greatest integers function is
\(f(x)=\begin{cases}-1 & \text{ if } -1\leq x<0 \\ 0 & \text{ if } 0\leq x<1 \\1 & \text{ if } 1\leq x<2\\... & \text{ if } ... \
& \text{ if } n\leq x
Range of a greatest integer function is all integers.
The function is 2 times of greatest integer function.
\(h(x)=\begin{cases}2(-1) & \text{ if } -1\leq x<0 \\ 2(0) & \text{ if } 0\leq x<1 \\2(1) & \text{ if } 1\leq x<2\\... & \text{ if } ... \\2(n) & \text{ if } n\leq x
Therefore the range of h(x) is all even integers.