Question

Jeśli log(2)=a, a log(3)=b, to ile wynosi log(15)?

Answer 1

[tex] log(15) = log( \frac{30}{2} ) = log(30) - log(2) = log(3 \times 10) - log(2) = log(10) + log(3) - log(2) = b + 1 - a[/tex]