The graph of the exponential function f(x)=3^x+3 is given with three points. Determine the following for the graph of f^-1(x).1. Graph f^-1(x)2. Find the domain of f^-1(x)3. Find the range of f^-1(x)4. Does f^-1(x) increase or decrease on its domain?5. The equation of the vertical asymptote for f^-1(x) is?

The graph of the exponential function fx3x3 is given with three points Determine the following for the graph of f1x1 Graph f1x2 Find the domain of f1x3 Find the class=

Respuesta :

Let's begin by listing out the given information:

[tex]\begin{gathered} f\mleft(x\mright)=3^x+3\Rightarrow y=3^x+3 \\ Switch\text{ }the\text{ }variables\text{ x \& y in the equation, we have:} \\ x=3^y+3\Rightarrow x-3=3^y \\ x-3=3^y\Rightarrow3^y=x-3 \\ \text{Take the }ln\text{ }o\text{f both }sides\text{, we have:} \\ y=\frac{\ln{\left(x - 3 \right)}}{\ln{\left(3 \right)}} \\ y=f^{-1}\mleft(x\mright) \\ f^{-1}\mleft(x\mright)=\frac{\ln{(x-3)}}{\ln{(3)}} \\ \end{gathered}[/tex]

2.

The domain of a function is the set of input or argument values for which the function is real and defined. This is given by:

[tex]\begin{gathered} x-3;x>3 \\ \therefore x>3 \end{gathered}[/tex]

3.

The range of a function is the set of output values for which the function is defined. This is given by:

[tex]\begin{gathered} 3^x+3\colon-\infty\: 4.

The range of f(x) is the domain of f^-1(x) since they are inverse of one another.

[tex]\begin{gathered} f\mleft(x\mright)=3^x+3 \\ x=0 \\ f(0)=3^0+3=1+3=4 \\ x=1 \\ f(1)=3^1+3=3+3=6 \\ x=2 \\ f(2)=3^2+3=9+3=12 \\ \end{gathered}[/tex]

Therefore, the domain of f^-1(x) increases

5.

The asymptote of a curve is a line such that the distance between the curve and the line approaches zero

[tex]\begin{gathered} \: \frac{\ln\left(x-3\right)}{\ln\left(3\right)}\colon\quad \mathrm{Vertical}\colon\: x=3 \\ \therefore x=3 \end{gathered}[/tex]

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