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logx3/7=-1 x= logx4=-2 X=± logx16=3 log163 log316 3√16 16√3 logx(x+2)=2 x= logx(x2 +x -1) =-1 x=1 x=-1 no hay solución x=1 y x=-1 doble log3x=log37+log32 x= log2x=-2+log25 x= log5x=log56-1 x= log7x=2-(1/2) log7196 x= ln(x+1)+ln(x-3)-ln3=ln(-x-1)-ln2 x=-1 x=6/4 x=6/4 ó x=-1 no hay solución 2 log (x+1)- log x = log (x+3) x= log2(x+3) - log2(x-1) = log2 (x-3) x= FIN |