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Ch. 4 - Inverse, Exponential, and Logarithmic Functions
Lial - College Algebra 13th Edition
Lial13th EditionCollege AlgebraISBN: 9780136881063당신이 사용하는 게 아니라요?교과서 변경
5장, 문제 59

Find each value. If applicable, give an approximation to four decimal places. ln 27 + ln 943

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Recall the logarithm property that states the sum of logarithms with the same base can be combined as the logarithm of the product: \(\ln a + \ln b = \ln(ab)\).
Apply this property to the given expression: \(\ln 27 + \ln 943 = \ln(27 \times 943)\).
Calculate the product inside the logarithm: multiply 27 by 943 to get the value inside the logarithm.
Evaluate the natural logarithm of the product: find \(\ln(27 \times 943)\) using a calculator or logarithm table.
If needed, approximate the value to four decimal places by rounding the result from the previous step.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Properties of Logarithms

Logarithms have specific properties that simplify expressions, such as the product rule: ln(a) + ln(b) = ln(ab). This allows combining sums of logarithms into a single logarithm, making calculations easier.
추천 영상:
5:36
Change of Base Property

Natural Logarithm (ln)

The natural logarithm, denoted ln, is the logarithm with base e (approximately 2.718). It answers the question: to what power must e be raised to get a given number? Understanding ln is essential for evaluating and approximating logarithmic expressions.
추천 영상:
2:51
The Natural Log

Decimal Approximation of Logarithms

When exact values are difficult to find, logarithms can be approximated using calculators. Approximations are often rounded to a specified number of decimal places, such as four, to provide a practical and precise numerical answer.
추천 영상:
7:30
Logarithms Introduction