Williams Hart
01/12/2023 · Elementary School
Evaluate the piecewise function *
2) \( f(x)=\left\{\begin{array}{ll}x^{2} & ,-15 \leq x \leq 0 \\ x-5 & , 0
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Tutor-Verified Answer
Step-by-step Solution
To evaluate the piecewise function \( f(x) \), we need to determine which part of the function to use based on the value of \( x \).
The function is defined as follows:
\[
f(x) =
\begin{cases}
x^{2} & \text{if } -15 \leq x \leq 0 \\
x - 5 & \text{if } 0 < x \leq 15
\end{cases}
\]
i) To find \( f(-5) \):
Since \(-5\) falls within the interval \([-15, 0]\), we use the first part of the piecewise function:
\[
f(-5) = (-5)^{2} = 25
\]
ii) To find \( f(15) \):
Since \(15\) falls within the interval \((0, 15]\), we use the second part of the piecewise function:
\[
f(15) = 15 - 5 = 10
\]
Thus, the evaluations are:
i) \( f(-5) = 25 \)
ii) \( f(15) = 10 \)
Quick Answer
i) \( f(-5) = 25 \)
ii) \( f(15) = 10 \)
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