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Logarithm

Syntax: log(x; b)

Example Syntax Output
log3 9 log(9; 3) 2
log5+6i (3+4i) log(3+4i; 5+6i) 0.825 + 0.099*i
log-1 i log(i; -1) 0.5

This function returns the logarithm of x to the base b.