Question

determine X para que estejam definidos:

Answer 1

a)
Log5 x = 4/3
x = 5^4/3
x = ³√5⁴
x = ³√5³.5¹
x = 5.³√5 (Cinco vezes raiz cúbica de cinco)

b)
Log4 (2x-1) = 1/2
2x-1 = 4^1/2
2x-1 = ²√4¹
2x-1 = ²√2¹.2¹
2x-1 = ²√2²
2x-1 = 2
2x = 2 + 1
2x = 3
x = 3/2