Question 1141549
2^N -2>/=9
Not that way.



THIS WAY:
2^N-2>=9


{{{2^N-2>=9}}}
{{{2^N>=11}}}

{{{N*log((2))>=log((11))}}}

{{{N>=log((11))/log((2))}}}

{{{approx_N>=3.459}}}