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Properties of Functions (id: 3e4b5a4d1)

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admin 发表于 2024-6-9 22:22:21 | 显示全部楼层 |阅读模式
本题目来源于试卷: Properties of Functions,类别为 IB数学

[问答题]
A function f(x) is dec.apz2pst6o 2w83lnlfi 0mbgj0ddk.(sned by $f(x)=\arccos \left(\frac{x^{2}-1}{x^{2}+1}\right)$, $x \in \mathbb{R}$
1. Show that f is an even function.
2. Find the equation of the horizontal asymptote to the graph of y=f(x) .
3. 1. Show that $f^{\prime}(x)=-\frac{2 x}{\sqrt{x^{2}}\left(x^{2}+1\right)} $ for $x \in \mathbb{R}$, $x \neq 0$ .
2. Using the expression for $f^{\prime}(x) $ and the result $ \sqrt{x^{2}}=|x|$ , show that f is increasing for x<0 .

A function g is defined by $g(x)=\arccos \left(\frac{x^{2}-1}{x^{2}+1}\right)$, $x \in \mathbb{R}$, $x \geq 0$ .
4. Find the range of g .
5. Find an expression for $g^{-1}(x)$ .
6. State the domain of $ g^{-1}(x)$ .
7. Sketch the graph of $y=g^{-1}(x) $. Clearly indicating any asymptotes with their equations and stating the values of any axes intercepts.




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