By Revathi Narasimhan

ISBN-10: 0538734779

ISBN-13: 9780538734776

In line with years of expertise instructing and writing supplemental fabrics for extra conventional precalculus texts, Reva Narasimhan takes a functions-focused method of educating and studying algebra and trigonometry options. This new sequence builds up correct ideas utilizing services as a unifying subject, repeating and increasing on connections to easy functions.Visualization and research inspire the functions-based technique, allowing scholars to raised keep the fabric to be used in later calculus classes.

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**Example text**

Find two points on the number line that are a distance of 4 units from Ϫ3. 94. Find a rational number less than . 2 Integer Exponents and Scientific Notation Objectives ᭤ Evaluate algebraic expressions ᭤ Define positive and negative exponents ᭤ Simplify expressions involving exponents ᭤ Write numbers using scientific notation ᭤ Determine significant figures for a given number In this section, we will discuss integers as exponents and the general rules for evaluating and simplifying expressions containing exponents.

Ln(4x ϩ 1) 0 3. Find f Ϫ1(x) given f (x) x 2 Ϫ 2, x Ն 0. Graph f and f Ϫ1 on the same set of axes. Chapter Test Test In Exercises 17–22, solve. 22. log x ϩ log(x ϩ 3) 1 23. For an initial deposit of $3000, find the total amount in a bank account after 6 years if the interest rate is 5%, compounded quarterly. 24. Find the value in 3 years of an initial investment of $4000 at an interest rate of 7%, compounded continuously. 6. f (x) eϪ2x 7. Write in exponential form: log6 1 216 Ϫ3. 8. Write in logarithmic form: 25 32.

Ln(4x ϩ 1) 0 3. Find f Ϫ1(x) given f (x) x 2 Ϫ 2, x Ն 0. Graph f and f Ϫ1 on the same set of axes. Chapter Test Test In Exercises 17–22, solve. 22. log x ϩ log(x ϩ 3) 1 23. For an initial deposit of $3000, find the total amount in a bank account after 6 years if the interest rate is 5%, compounded quarterly. 24. Find the value in 3 years of an initial investment of $4000 at an interest rate of 7%, compounded continuously. 6. f (x) eϪ2x 7. Write in exponential form: log6 1 216 Ϫ3. 8. Write in logarithmic form: 25 32.

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