given f(x)=3^x-2 and g(x)=f(3x)+4, write the function rule for function g and describe the types of transformations that occur between function f and function g.

Answer :

Answer:

[tex]g(x)=3^{3x}+2[/tex]

The transformation that occurs from [tex]f(x)\rightarrow g(x)[/tex] is compression by 3 units horizontally and shift  of 4 units upwards.

Step-by-step explanation:

Given

[tex]f(x)=3^x-2[/tex]

[tex]g(x)=f(3x)+4[/tex]

Translation Rules:

[tex]f(x)\rightarrow f(cx)[/tex]

If [tex]c>1[/tex] the function is compressed [tex]c[/tex] units horizontally.

If [tex]c<1[/tex] and [tex]c>0[/tex]  the function stretches [tex]c[/tex] units horizontally.

[tex]f(x)\rightarrow f(x)+c[/tex]

If [tex]c>0[/tex] the function shifts [tex]c[/tex] units to the up.

If [tex]c<0[/tex] the function shifts [tex]c[/tex] units to the down.

Applying the rules to [tex]f(x)[/tex]

Step 1

[tex]f(x)\rightarrow f(3x)[/tex]

[tex]f(3x)=3^{3x}-2[/tex]

[compressed [tex]3[/tex] units horizontally]

Step 2

[tex]f(3x)\rightarrow f(3x)+4=g(x)[/tex]

[tex]f(3x)+4=3^{3x}-2+4[/tex]

∴ [tex]g(x)=3^{3x}+2[/tex]

[shifts 4 nits up]

∴ The transformation that occurs from [tex]f(x)\rightarrow g(x)[/tex] is compression by 3 units horizontally and shift  of 4 units upwards.

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