How do you graph g(x) = 1/4log_2 (x - 4) - 3g(x)=14log2(x4)3?

1 Answer
Feb 11, 2017

See graph and explanation.

Explanation:

To make g real, x > 4x>4.

x-intercept ( y = 0 ) :4100, from, log_2(x-4)=12log2(x4)=12, giving x=4+2^12

Converting to ln,

g=1/4(ln(x-4)/ln 2)-3 and the Socratic graph is created.

Ax x to oo, g to oox,g.

Also, as xto4, y to -oox4,y, revealing the asymptote x = 4..

x-intercept ( y = 8 ) :4100, from, log_2(x-4)=12log2(x4)=12, giving x=4+2^12

graph{(1/4ln(x-4)/ln2-3-y)=0 [0, 10000, -5, 5]}

The graph is no to uniform scale in both directions. Yet, it reveals features