How do you calculate log65 with a calculator?
1 Answer
Aug 12, 2016
Explanation:
Use the change of base formula:
logab=logcblogca
So you can use natural or common logs:
log65=ln5ln6
log65=log5log6
In fact, if you know
log65=log5log6=log10−log2log2+log3
≈1−0.301030.30103+0.47712=0.698970.77815≈0.89825
Actually the true value is closer to