2^11/12



and

the answer sheet says 1.8877

how did they get that answer? what's the formula move?

2^(11/12)

That means the 12th root of 2^11th power.

Which is indeed somewhere around 1.88...

So, the fraction in an exponent means power over index. (11 over 12)

This post was edited by drhong on Nov 24 2013 06:39pm

2^11/12 = 2^11/(2^2*3) = 2^9/3 = 512/3 = 170.6667 (or you could just 2^11/12 = 2048/12 = 170.6667)

so there is something wrong here, your answer doesn't match the value you stated

postscript: 'drhong' might be right, is it 2^(11/12) and not 2^11/12 ?

This post was edited by brmv on Nov 24 2013 06:45pm

thank you brmv

so, just put bracket on the fraction