logx-1/2log(x-1/2).........
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logx - 1/2 log( x -1/2) = log( x + 1/2) - 1/2log( x + 1/8)
logx - log( x -1/2)½ = log( x + 1/2) -log( x + 1/8)½
logx - log( x + 1/2) = log( x -1/2)½ - log( x + 1/8)½
logx/( x + 1/2) = log{ ( x -1/2)/( x + 1/8)}½
x/( x + 1/2) = √(x -1/2)/√(x + 1/8)
take square both sides
x²/( x + 1/2)² = ( x - 1/2)/( x + 1/8)
x²(x + 1/8) = (x+ 1/2)²( x - 1/2)
x³ + 1/8x = (x² - 1/4)(x +1/2) = x³ +1/2x² -1/4x -1/8
1/8x = 1/2x² - 1/4x -1/8
1/8x + 1/4x = 1/2x² -1/8
3/8x = 4/8x² -1/8
4x² - 3x - 1 = 0
4x² -4x + x -1 = 0
4x( x -1) +1( x -1) = 0
x = -1/4 and 1
now for log to be defined
x >0
x > 1/2
x > -1/2
x > -1/8
so, common value of this
x > 1/2
so, x ≠ -1/2
hence, x = 1
logx - log( x -1/2)½ = log( x + 1/2) -log( x + 1/8)½
logx - log( x + 1/2) = log( x -1/2)½ - log( x + 1/8)½
logx/( x + 1/2) = log{ ( x -1/2)/( x + 1/8)}½
x/( x + 1/2) = √(x -1/2)/√(x + 1/8)
take square both sides
x²/( x + 1/2)² = ( x - 1/2)/( x + 1/8)
x²(x + 1/8) = (x+ 1/2)²( x - 1/2)
x³ + 1/8x = (x² - 1/4)(x +1/2) = x³ +1/2x² -1/4x -1/8
1/8x = 1/2x² - 1/4x -1/8
1/8x + 1/4x = 1/2x² -1/8
3/8x = 4/8x² -1/8
4x² - 3x - 1 = 0
4x² -4x + x -1 = 0
4x( x -1) +1( x -1) = 0
x = -1/4 and 1
now for log to be defined
x >0
x > 1/2
x > -1/2
x > -1/8
so, common value of this
x > 1/2
so, x ≠ -1/2
hence, x = 1
Answered by
0
Answer:
(x=1)
Solution In Image-
Logarithmic Properties Used-
(i) loga(m) - loga(n) = loga (m/n)
(ii) kloga(b) = loga(b)^k
Hope It Helps!
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