(1/2x)+1+log6 base5=log(5^(1/x)+125) find x
Answers
Answer:
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Step-by-step explanation:
Given : (1/2x) + 1 + log₅6 = log₅(5¹/ˣ + 125)
To find : x
Solution:
(1/2x) + 1 + log₅6 = log₅(5¹/ˣ + 125)
=> (1/2x) + 1 = log₅(5¹/ˣ + 125) - log₅6
=> (2x + 1) /2x = log₅ ( (5¹/ˣ + 125)/6)
=> (5¹/ˣ + 125)/6 = 5⁽²ˣ⁺¹⁾/²ˣ
=> (5¹/ˣ + 125) = 6 * 5⁽²ˣ⁺¹⁾/²ˣ
=> 5¹/ˣ + 5³ = 5* 5⁽²ˣ⁺¹⁾/²ˣ + 5⁽²ˣ⁺¹⁾/²ˣ
=> 5¹/ˣ + 5³ = 5⁽⁴ˣ⁺¹⁾/²ˣ + 5⁽²ˣ⁺¹⁾/²ˣ
Now there are two case
5¹/ˣ = 5⁽⁴ˣ⁺¹⁾/²ˣ & 5³ = 5⁽²ˣ⁺¹⁾/²ˣ
or 5¹/ˣ = 5⁽²ˣ⁺¹⁾/²ˣ & 5³ = 5⁽⁴ˣ⁺¹⁾/²ˣ
Case 1 :
5¹/ˣ = 5⁽⁴ˣ⁺¹⁾/²ˣ & 5³ = 5⁽²ˣ⁺¹⁾/²ˣ
=> 1/x = (4x + 1)/2x => 4x + 1 = 2 => x = 1/4
3 = (2x + 1)/2x => 6x = 2x + 1 => x = x = 1/4
Hence x = 1/4
Case 2 :
5¹/ˣ = 5⁽²ˣ⁺¹⁾/²ˣ & 5³ = 5⁽⁴ˣ⁺¹⁾/²ˣ
=> 1/x = (2x + 1)/2x => 2x + 1 = 2 => x = 1/2
3 = (4x + 1)/2x => 6x = 4x + 1 => x = 1/2
Hence x = 1/2
x = 1/4 & 1/2 are the Solution
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