问题
填空题
方程lo
|
答案
lo
-log (x+1)5
=log (x-3) 1 5
+log (x+1)5 g (x-3)5
=log5(x+1)(x-3)=1=log55
∴
解得x=4x+1>0 x-3>0 (x+1)(x-3)=5
故答案为:x=4
方程lo
|
lo
-log (x+1)5
=log (x-3) 1 5
+log (x+1)5 g (x-3)5
=log5(x+1)(x-3)=1=log55
∴
解得x=4x+1>0 x-3>0 (x+1)(x-3)=5
故答案为:x=4