What is the difference between (lgx) 2 and lgx2,
(lgx)2=(lgx)×(lgx)
But lgx2 = (lgx) + (lgx)
totally different
Solution set of equation lgx2-lgx = 0
lgx²-lgx=0
lg(x²/x)=0
lgx=0
x=1
lgx+lgx^2+…… +Lgx ^ n = n ^ 2 + N, then =?
lgx+lgx^2+…… +lgx^n=(1+2+…… n)lgx=(1/2)n(n+1)lgx=n^2+n
lgx=2
x=100