Exponentielles :
\( e^a \times e^b = e^{a+b} \)
\( \frac{e^a}{e^b} = e^{a-b} \)
\( (e^a)^b = e^{a \cdot b} \)
Logarithmes :
\( \ln(a) + \ln(b) = \ln(a \cdot b) \)
\( \ln(a) - \ln(b) = \ln\left(\frac{a}{b}\right) \), pour \( a, b > 0 \)