Question 48672
log2 8 = x


this is equivalent to asking "what power of 2 is needed to equal 8"? Answer is 3, since {{{2^3}}} is 2*2*2 which is 8.


You need to become familiar with this form of question rather than having it written as {{{2^x = 8}}}. They are 2 opposite forms of the same problem just like 3-x=7 is just the same as asking x=3-7.


jon.