The Student Room Group
franks
:frown: ln4 - 0.5 ln2 = 1.5 ln2
how? could someone just quickly explain the rules which get me to that answer... thank you ! xxx

As n ln a = ln (a^n)

ln 4 = ln (2^2) = 2 ln 2

therefore 2 ln 2 - 0.5 ln 2 = 1.5 ln 2

(2-0.5) ln 2 = 1.5 ln 2

1.5ln 2 = 1.5 ln 2
Reply 2
As n ln a = ln (a^n)

ln 4 = ln (2^2) = 2 ln 2

therefore 2 ln 2 - 0.5 ln 2 = 1.5 ln 2

(2-0.5) ln 2 = 1.5 ln 2

1.5ln 2 = 1.5 ln 2
of course, thanks :smile: