My second one for today:
Solve x:
2 Log x + 2 = log 900
I said:
LogX2+2=Log302
2Logx−2Log30=−2
2Logx30=−2
60Logx=−60
Logx=−1
x=10−1
x=110
Is this correct?
You go wrong on your fourth line. Check: 2log(1/10) +2 =0 log(900) = 2.954
2log10x+2=log109002log10x+2=log103022log10x+2=2log1030log10x+1=log1030log10x+log1010=log1030log10(10x)=log103010x=30x=3
Alan,
thanks again...I understand my error...thanx a million!