Hello all,I need help with a particulary sticky equation - L2 = L1 + 20*log10(d1^2/d2^2)where:L1=94 d1=1 d2=1500I'm given that the answer for this should be L2 =30.5 but i cannot seem to make it work!!!Please please help me - this is quite urgent! I would appreciate any comments!!Thanks very much