+23254 Do you mean that the base is 1/2?
If so, use the change-of-base formula to get:
if you want to use common logs: log (to the base 1/2) 9 = log(9) / log(1/2)
if you want to use natural logs: log (to the base 1/2) 9 = ln(9) / ln(1/2)
Generally speaking, use: log(number) / log(base) or ln(number) / ln(base)
You'll get the same answer using either log or ln.
+7188 Hit log then type 1/2 then (9) then enter
$${\frac{{\mathtt{log1}}}{{\mathtt{2}}}}{\mathtt{\,\times\,}}\left({\mathtt{9}}\right) = {\frac{{log}_{10}\left({\mathtt{1}}\right)}{{\mathtt{2}}}}{\mathtt{\,\times\,}}{\mathtt{9}}$$
+23254 Do you mean that the base is 1/2?
If so, use the change-of-base formula to get:
if you want to use common logs: log (to the base 1/2) 9 = log(9) / log(1/2)
if you want to use natural logs: log (to the base 1/2) 9 = ln(9) / ln(1/2)
Generally speaking, use: log(number) / log(base) or ln(number) / ln(base)
You'll get the same answer using either log or ln.
