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Ch. 4 - Exponential and Logarithmic Functions
Blitzer - College Algebra 8th Edition
Blitzer8th EditionCollege AlgebraISBN: 9780136970514Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoBlitzer 8th EditionCh. 4 - Exponential and Logarithmic FunctionsProblema 91
Capitolo 5, Problema 91

Evaluate or simplify each expression without using a calculator. In (1/e6)

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Recognize that the expression is \( \frac{1}{e^{6}} \), which is a fraction with the base \( e \) raised to the power of 6 in the denominator.
Recall the property of exponents that \( \frac{1}{a^{n}} = a^{-n} \), where \( a \) is a nonzero number and \( n \) is an integer.
Apply this property to rewrite \( \frac{1}{e^{6}} \) as \( e^{-6} \).
Understand that \( e^{-6} \) is the simplified form of the original expression, representing the exponential function with a negative exponent.
No further simplification is needed unless the problem asks for a decimal approximation, which is not allowed here.

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Properties of Exponents

Understanding how to manipulate expressions with exponents is essential. This includes rules like a^m / a^n = a^(m-n) and (a^m)^n = a^(mn), which help simplify expressions involving powers, especially when dealing with fractions and negative exponents.
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Rational Exponents

Negative Exponents

A negative exponent indicates the reciprocal of the base raised to the corresponding positive exponent. For example, a^(-n) = 1 / a^n. Recognizing and applying this rule allows simplification of expressions like 1 / e^6 into e^(-6).
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Zero and Negative Rules

Simplifying Exponential Expressions Without a Calculator

Simplifying expressions without a calculator involves applying exponent rules and algebraic manipulation rather than numerical approximation. This skill is crucial for exact answers and understanding the structure of exponential expressions.
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Simplifying Exponential Expressions
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