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Free Logarithms Calculator - Simplify logarithmic expressions using algebraic rules step-by-step
Enter the logarithmic expression below which you want to simplify. The logarithm calculator simplifies the given logarithmic expression by using the laws of logarithms. Click the blue arrow to submit. Choose "Simplify/Condense" from the topic selector and click to see the result in our Algebra Calculator!
31 Ιουλ 2024 · The logarithm in base 2 of 256 is 8. To find this result, consider the following formula: 2 x = 256. The logarithm corresponds to the following equation: log2(256) = x. In this case, we can check the powers of 2 to see if we can find the value of x: 2 0 = 1, 2 1 = 2, 2 2 = 4, …, 2 7 = 128, and 2 8 = 256.
EX: log(2 6) = 6 × log(2) = 1.806. It is also possible to change the base of the logarithm using the following rule.
Rewrite log2 (8) = x log 2 (8) = x in exponential form using the definition of a logarithm. If x x and b b are positive real numbers and b b does not equal 1 1, then logb (x) = y log b (x) = y is equivalent to by = x b y = x. Create equivalent expressions in the equation that all have equal bases.
log 2 (x) + log 2 (x-3) = 2. Solution: Using the product rule: log 2 (x∙(x-3)) = 2. Changing the logarithm form according to the logarithm definition: x∙(x-3) = 2 2. Or. x 2-3x-4 = 0. Solving the quadratic equation: x 1,2 = [3±√(9+16) ] / 2 = [3±5] / 2 = 4,-1. Since the logarithm is not defined for negative numbers, the answer is: x = 4 ...
\displaystyle{{\log}_{{2}}{8}}={3} Explanation: Let \displaystyle{x} be the unknown value \displaystyle{x}={{\log}_{{2}}{8}} also Using exponential form \displaystyle{2}^{{x}}={8} ...
