log
The base-10 logarithm function.
Syntax
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log(x)-
xis a real or complex number
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Description
For real positive x, log(x) is the base-10 logarithm of x, that is, the unique solution y to 10^y = x.
The real identity log(x) = ln(x)/ln(10) leads to the natural generalisation
log(z) = ln(z)/ln(10)
for all non-zero complex z.
Examples
log(1000)
3
log(3.5⋅10^−20)
−19.4559319556
log(−1)
1.36437635384⋅i
log(i)
0.682188176921⋅i