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julia-pushkina [17]
1 year ago
7

(a) Determine the end behavior of the graph of the function

Mathematics
1 answer:
vodka [1.7K]1 year ago
7 0

Answer

y=x^4

EXPLANATION

Problem Statement

The question gives us a polynomial:

f(x)=x^2(x-10)(x+10)

We are asked to find the end behavior of the function for large values of |x|.

Solution

To solve this question, we simply need to expand the function.

\begin{gathered} f(x)=x^2(x-10)(x+10) \\ f(x)=x^2(x^2-100) \\ f(x)=x^4-100x^2 \end{gathered}

For large values of x,

\begin{gathered} x^4>100x^2 \\ \text{Divide both sides by }x^2 \\ \frac{x^4}{x^2}>\frac{100x^2}{x^2} \\  \\ x^2>100 \\ x^2>10^2 \\ x>10 \\  \\ \text{Thus, for any value of x > 10,} \\ x^4>100x^2\text{ holds true.} \\  \\ \text{This means that we can choose a sufficiently large enough }x\text{ to make the influence of }100x^2 \\ \text{negligible.} \\  \\ f(x)\approx x^4,\text{ for very large values of x.} \end{gathered}

Final Answer

y=x^4

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