Diketahui log 2=0,3010,log 3=04771,dan log 7=0,8451.tntukan nilai log 84.

=log 84
=log (4x3x7)
=log 4 + log 3 + log 7
=log 2^2 + 0,4771 + 0,8451
=2 log 2 + 1,3222
=2(0,3010) + 1,3222
=0,6020 + 1,3222
=1,9242