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The function \( f(x)=2^{x} \) is translated left 3 units and down 2 units. Which is the equation of the translated function? \( g(x)=2^{x-3}-2 \) \( g(x)=2^{x-2}-3 \) \( g(x)=2^{x-2}+3 \) \( g(x)=2^{x+3}-2 \)

Ask by Paul Hammond. in the United States
Feb 03,2025

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Answer

The translated function is \( g(x) = 2^{x+3} - 2 \).

Solution

To translate the function \( f(x) = 2^x \) left by 3 units and down by 2 units, follow these steps: 1. **Horizontal Translation (Left by 3 units):** - Replace \( x \) with \( x + 3 \) to shift the graph left. - This gives \( 2^{x + 3} \). 2. **Vertical Translation (Down by 2 units):** - Subtract 2 from the function to shift it downward. - This results in \( 2^{x + 3} - 2 \). Combining both translations, the equation of the translated function is: \[ g(x) = 2^{x + 3} - 2 \] **Answer:** \( g(x)=2^{x+3}-2 \)

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Bonus Knowledge

To translate the function \( f(x) = 2^x \) left by 3 units, you replace \( x \) with \( x + 3 \). This gives you \( f(x + 3) = 2^{x + 3} \). Next, to move the function down by 2 units, you subtract 2 from the entire function. So you get \( g(x) = 2^{x + 3} - 2 \). None of the given options match this equation exactly due to how they rearranged the expression. However, let’s take a detour into how these transformations can be visualized! Imagine moving a party banner (our function) 3 steps to the left (left translation) and then lowering it by 2 (downward translation). The final look of the banner on the wall tells the whole story! So, the idea is to shift the fun, and this reflects how transformations affect the graphs of functions! Understanding how different functions react to these shifts helps in many real-world situations, like predicting trends or even designing user interfaces where elements need to be properly aligned. Knowing how to manipulate functions can be like adjusting elements in your design toolbox, making it super useful in various fields!

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