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Please help I have a sucky teacher and don’t know what to do

Please help I have a sucky teacher and don’t know what to do-example-1
User Eliko
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1 Answer

3 votes

Answer:

1, 4, 3, 6, 2, 7, 5

Explanation:

The circle operator in
f\circ g means that the function named on the left (f) operates on the result of the function named on the right (g). So, the notation


(f\circ g)(x)

means


f(g(x))

That is, g(x) is computed and used as input to the function f. When the function definitions are as shown, the evaluation proceeds in these steps.


(f\circ g)(-4)\\\\=f(g(-4))\quad\text{write as function of a function}\\\\=f(-2(-4)^2)\quad\text{put -4 for x in $g(x)$}\\\\=f(-2(16))\quad\text{evaluate $(-4)^2$}\\\\=f(-32)\quad\text{evaluate $g(-4)$}\\\\=2(-32-1)\quad\text{put -32 for x in $f(x)$}\\\\=2(-33)\quad\text{first step evaluating $f(-32)$}\\\\=-66\quad\text{value of $(f\circ g)(-4)$}

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If your step choices at the bottom are numbered 1 to 7 left-to right, then the sequence is as shown in the Answer section above.