急! F5 Graphs of Functions 3q5

2012-10-16 5:57 am
請詳細步驟教我計下條 :
(不要綱址回答)


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回答 (1)

2012-10-16 6:15 am
✔ 最佳答案
[x]解log既base

a)
log[2] 2(x^2)
=log[2] 2 + log[2](x^2)
=1 + 2log[2]x

b)
Given y=log[2]x
First, enlarge the graph 2 times by y-axis to obtain y=2log[2]x
Second, shift the graph 1 unit upwards to obtain y=1 + 2log[2]x
By (a), y=1 + 2log[2]x => y=log[2]2(x^2)

c)
Sketch your graph


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