Pregunta
TRY IT! \[ \left.\begin{array}{lr}f(x)=\left\{\begin{array}{lr}2 x^{3}-1, & x<1 \\ 3, & 1 \leq x<5 \\ |x-2|, & x \geq 5\end{array}\right. \\ f(8)=60 & f(0)=-1\end{array} \right\rvert\, f(4)= \]
Ask by Mitchell Murray. in the United States
Feb 03,2025
Solución de tutoría real
Respuesta verificada por el tutor
Responder
\( f(4) = 3 \)
Solución
To find \( f(4) \) using the piecewise function defined as:
\[
f(x) =
\begin{cases}
2x^3 - 1 & \text{if } x < 1 \\
3 & \text{if } 1 \leq x < 5 \\
|x - 2| & \text{if } x \geq 5
\end{cases}
\]
we need to determine which condition \( x = 4 \) falls under.
1. **Identify the interval for \( x = 4 \)**:
- The first case \( 2x^3 - 1 \) applies for \( x < 1 \).
- The second case \( 3 \) applies for \( 1 \leq x < 5 \).
- The third case \( |x - 2| \) applies for \( x \geq 5 \).
Since \( 4 \) falls within the interval \( 1 \leq x < 5 \), we use the second case.
2. **Evaluate \( f(4) \)**:
- According to the second case, \( f(4) = 3 \).
Thus, the final answer is:
\[
f(4) = 3
\]
Revisado y aprobado por el equipo de tutoría de UpStudy
Como
error msg
Explicar
Simplifique esta solución
Beyond the Answer
To find \( f(4) \), we start by determining which piece of the piecewise function to use for \( x = 4 \). Since \( 1 \leq 4 < 5 \), we can see that we should use the middle piece, which is \( f(x) = 3 \). Therefore, \( f(4) = 3 \). When considering function evaluations like this one, it’s always essential to clearly identify the intervals defined in a piecewise function to avoid errors. A common mistake is to overlook the boundaries, so make sure to check which interval the input lies in before making a calculation!
preguntas relacionadas
¡Prueba Premium ahora!
¡Prueba Premium y hazle a Thoth AI preguntas de matemáticas ilimitadas ahora!
Quizas mas tarde
Hazte Premium