Question

solve: \[e ^{x-4}=9\] iv got x=5.197 but i think its wrong

Answer 1

ln of both sides
ln(e^(x-4)) = ln(9)
(x-4)*ln(e) = ln(9)
x-4 = ln(9)
x = ln(9)+4

Answer 2

oh okay, thanks! @zzr0ck3r