Find d/dx (log to base 10 of x), for x > 0.
A1/(10 ln x)
B1/(x ln 2)
C1/(x ln 10)
D(ln 10)/x
Answer & Solution
Correct answer: C. 1/(x ln 10)
Since log10 x = ln x / ln 10, the derivative is 1/(x ln 10).
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