Question

log(x-3) na base 4 - log(x-3) na base 16 $\leq$1

Answer 1

Log(4) x-3 - log(16) x-3 ≤ 1 
Log(4) x-3 - log(4²) x-3 ≤ 1
Log(4) x-3 - 1/2.log(4) x-3 ≤ 1
log(4) x-3 = y
y - y/2 ≤ 1
2y - y ≤ 2
y ≤ 2
log(4) x-3 ≤ log(4)16
x-3 ≤ 16
x ≤ 16+3
x ≤ 19