Solving Logarithmic Equation | The Cube Root and Sixth Root Are Hiding the Same Trick
InfiniteIntegers и Inmathsexplorer
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Solving Logarithmic Equation | The Cube Root and Sixth Root Are Hiding the Same Trick
1 480 просмотров · 1 день назад
InfiniteIntegers и Inmathsexplorer
1 480 просмотров · 1 день назад
Can you solve this logarithm equation without getting trapped by the unusual radical bases?
Problem:
log₍∛2₎(x^(5/4)) = log₍⁶√x₎(32)
At first glance, the cube root, sixth root, fractional exponent, and logarithm bases make this look much harder than it really is. But there is a hidden relationship between the numbers 2, 3, 6, and 32.
The key is to recognize that both sides can be rewritten using base 2. Once that transformation is made, the complicated radical logarithms collapse into a much simpler equation involving log₂x.
We work through the transformation step by step, solve for every possible value of x, check the logarithmic domain restrictions, and verify both answers directly.
The final solutions are:
x = 2^(2√2) or x = 2^(-2√2)
Before watching the solution, pause the video and try to find the connection between the cube root and sixth root.
Can you spot the hidden trick before the first transformation?
Topics covered: logarithmic equations, change of base, radical logarithms, fractional exponents, logarithm bases, solving for x, exact solutions, domain restrictions, and verification.
If you found a different elegant method, share it in the comments.
#Logarithms
#Math
#MathProblem
#Algebra
#LogarithmEquation
#MathTricks
#Mathematics
#Equation
#ProblemSolving
#LearnMath
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