Rational Functions (id: ad9f42ccc)

本题目来源于试卷: Rational Functions，类别为 IB数学

[问答题]
The function f is given by:jq*ajmw t(p3 ghz8tbem.y+hb 4+u( m $f(x)=\frac{4 x^{2}-128}{x^{2}-16}$ , for $x \neq \pm 4$ .
1. Prove that f is an even function.
2. 1. Sketch the graph of y=f(x) .
2. Write down the range of f .

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