有幾條maths 唔識做

[匿名]

2007-10-01 4:38 pm

use transformations of the graph of y=x(x)(x)(x) or y=x(x)(x)(x)(x) to graph each function.
1.f(x)=(x-2)(x-2)(x-2)(x-2)(x-2)
2.f(x)=3-(x+2)(x+2)(x+2)(x+2)
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回答 (1)

Ka Man

2007-10-01 5:30 pm

✔ 最佳答案

use these 2 graphs ....y = x^4 or y = x^5
1.f(x)=(x-2)(x-2)(x-2)(x-2)(x-2)
=(X-2)^5 << <<代表5次方
你首先畫左幅y = x^5
之後將佢向右移兩格就得, 因為"括弧"入面減數係向右移, 加數向左, 一定要記得~ 咁而家係減2, 所以係向右移兩格,
2.f(x)=3-(x+2)(x+2)(x+2)(x+2)
=3-(X+2)^4
= -(X+2)^4 +3
你首先畫左幅y = x^4
之後將佢向左移兩格, 因為"+".
之後將個graph上下倒轉, 所有正數變負,負數變正, 因為而家有個"-"乘左佢
最後成個graph向上移3格

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