Most scientific calculators have keys for log10 x and ln
Chapter 7, Problem 69E(choose chapter or problem)
Problem 69E
Most scientific calculators have keys for log10 x and ln x. To find logarithms to other bases, we use the equation loga x = (in x)/(in a).
Find the following logarithms to five decimal places.
a. log3 8 b. log7 0.5 c. log20 17 d. log0.5 7
e. ln x, given that log10 x = 2.3
f. ln x, given that log2 x = 1.4
g. ln x, given that log2 x = -1.5
h. ln x, given that log10 x = -0.7
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