- #1

- 26

- 0

then there are two ways of finding x: root and log

so for example, x^2=4

by root:

(x^2)^(1/2)=(4)^(1/2)

x=[itex]\pm[/itex]2

by log:

2 ln (x) = 2 ln 2

x=2

but it is yet impossible to obtain the negative x from logs. How are you supposed to do it? And heres a few questions:

1.when a is rational how do you know x have 1 or 2 answers?

2.what happens when a is not rational?

3.what happens when a or(and) b is not real?

thanks

Victor Lu

16