Math Problem Statement
Prove that log295.65/log270 = 1/2
Solution
We are tasked with proving that:
Step-by-step proof:
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Use the Change of Base Formula: The logarithmic identity we will use is the change of base formula: This allows us to rewrite any logarithm to a different base (in our case, the natural or common logarithm).
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Rewrite the expression: We rewrite the expression using natural logarithms (or any common base logarithms):
The factor cancels out, so this simplifies to:
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Simplification using approximation: Now, let's calculate approximate values of the logarithms:
Now, divide the two logarithmic values:
This result isn't equal to , so the given expression does not seem to directly equal based on standard logarithm calculations.
Analysis of Possible Error or Alternative Interpretation:
It could be that the problem expects a different interpretation, such as rounding or the use of specific values that were assumed. The exact values of 95.65 and 70 might have some context in a particular problem setup that changes the approach.
Conclusion:
Using standard logarithmic approximations, , which does not equal . The statement does not hold under regular logarithmic calculations.
Would you like more details on this, or have any questions?
5 related questions:
- What is the change of base formula in logarithms, and how is it applied?
- How do approximations of logarithms affect final results in mathematical proofs?
- How can we calculate logarithms without a calculator for small values?
- How does the choice of logarithmic base (e.g., base 2 or base 10) influence the result?
- What are some common mistakes made when working with logarithmic identities?
Tip:
Always double-check the base of the logarithm when simplifying expressions to avoid calculation errors.
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Math Problem Analysis
Mathematical Concepts
Logarithms
Change of Base Formula
Algebra
Formulas
Change of Base Formula: log_b(a) = log(a) / log(b)
Theorems
Change of Base Theorem
Suitable Grade Level
Grades 10-12
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