by definition:
log4 (x-4) = -1
is equivalent to
x-4 = 4^-1
x-4 = 1/4
x = 1/4 - 4
= -15/4
so we would have log (-3/4-4)
but we cannot take the log of a negative, so ....
no solution.
solve the following equation show all work log4(x-4)= -1.
2 answers
log takes on all real values for its range. So, something's wrong here.
x - 4 = 1/4
x = 1/4 + 4
x = 17/4
log4(17/4 - 4) = log4(1/4) = -1
x - 4 = 1/4
x = 1/4 + 4
x = 17/4
log4(17/4 - 4) = log4(1/4) = -1