Question

Could someone tell me the rule for this?

Answer 1

this question is a bit cryptic.
the second line comes from taking the log base 2 of both sides of the equation

Answer 2

i can't make heads nor tails out of it

Answer 3

maybe it means \(2^x=2\) OR \(2^x=1\) in which case \(x=1\) OR \(x=0\)

Answer 4

It's just the end of a longer equation, but I didn't understand how 2^x=2 becomes x=1 :P

Answer 5

Yup, the V stands for OR

Answer 6

ok,then is it not obvious that if \(2^x=2\) then \(x=1\) ?

Answer 7

I'm a little rusty on the "log"-rules :P