急! F5 Graphs of Functions 3q5

[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