ln3-ln1=?ln2-ln0.5=?

ln3-ln1=?ln2-ln0.5=?

Ln3-ln1 = ln (3 △ 1) = Ln3 [ln1 = 0, also can be calculated directly]
ln2-ln0.5=ln(2÷0.5)=ln4
lna-lnb=ln(a/b)