本题目来源于试卷: Quadratics，类别为 IB数学
[问答题]
Let $f(x)=2(x-1)^{2}-8$ , for x $\in \mathbb{R}$ .
1. Show that $f(x)=2 x^{2}-4 x-6$ .
2. For the graph of f :
1. write down the coordinates of the vertex;
2. write down the y -intercept;
3. find both x -intercepts.
3. Hence sketch the graph of f .
Let $g(x)=6 x^{2}$ , for $x \in \mathbb{R}$ .
The graph of f may be obtained from the graph of g using the following two transformations:
a compression of scale factor a in the y -direction, followed by
a translation of $\binom{h}{k}$ .
4. Find the values of a, h and k .
参考答案: 
本题详细解析:
暂无
| 
