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In Exercises 53–56, determine whether the statement is true or false. If it is true, explain why it is true. If it is false, give an example to show why it is false.
55. If
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Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
- For Exercises 57–62, find and simplify f(x + h). (See Example 6) 59. f(x) = 7 – 3x 62. f(x) = x – 4x + 2 57. f(x) = -4x – 5x + 2 58. f(x) = -2x² + 6x – 3 60. f(x) = 11 – 5x² 61. f(x) = x' + 2x – 5arrow_forwardExercises 103–110: Let the domain of f(x) be [-1,2] and the range be [0, 3 ]. Find the domain and range of the following. 103. f(x – 2) 104. 5/(x + 1) 105. -/(x) 106. f(x – 3) + 1 107. f(2x) 108. 2f(x – 1) 109. f(-x) 110. -2/(-x)arrow_forwardEach of Exercises 25–36 gives a formula for a function y = f(x). In each case, find f-x) and identify the domain and range of f-. As a check, show that f(fx)) = f-"f(x)) = x. 25. f(x) = x 26. f(x) = x, x20 %3D %3D 27. f(x) = x + 1 28. f(x) = (1/2)x – 7/2 30. f(x) = 1/r, x * 0 %3D 29. f(x) = 1/x, x>0 x + 3 31. f(x) 32. f(x) = VE - 3 34. f(x) = (2x + 1)/5 2 33. f(x) = x - 2r, xs1 (Hint: Complete the square.) * + b x - 2' 35. f(x) = b>-2 and constant 36. f(x) = x? 2bx, b> 0 and constant, xsbarrow_forward
- In Exercises 126–131, use a graphing utility to graph each function. Use a [-5, 5, 1] by [-5, 5, 1] viewing rectangle. Then find the intervals on which the function is increasing, decreasing,. or constant. 126. f(x) = x' – 6x² + 9x + 1 127. g(x) = |4 – x²| 128. h(x) = |x – 2| + |x + 2| 129. f(x) = x*(x – 4) 130. g(x) = x 131. h(x) = 2 –arrow_forwardIn Exercises 53–56, determine where f is increasing. 53. f(x) = |x + 1| 54. f(x) %3D х3 55. f(x) — х4 56. f(x) = %D x4 + x2 + 1arrow_forwardUse Definition 0.10 to show that each pair of functions in Exercises 67–70 are inverses of each other. 1 2 67. f(x) =2 – 3x and g(x) = -x+ 3 68. f(x) = x² restricted to [0, 0) and g(x) = V 69. f(x) = and g(x) = 1+x 1-x 1 1 70. f(x) = and g(x) 2x 2xarrow_forward
- Sometimes a derivative contains negative exponents, andsimplification requires that all exponents be positive.Write each of the expressions in Exercises 46–49 withoutnegative exponents.arrow_forwardFor Exercises 61–66, fill in the blanks and determine an equation for f(x) mentally. 6 from x. 62. If function f multiplies x by 2, then f 61. If function f adds 6 to x, then f Function f is defined by f(x) = x + 6, and function f is defined by fx) = -1 by 2. Function f is defined by f(x) = 2x, and function -1 f is defined by f'(x) = 63. Suppose that function f multiplies x by 7 and subtracts 4. Write an equation for f(x). 64. Suppose that function f divides x by 3 and adds 11. Write an equation for f(x). 65. Suppose that function f cubes x and adds 20. Write an equation for f'(x). 66. Suppose that function f takes the cube root of x and subtracts 10. Write an equation for f(x).arrow_forwardExercises 1-6: Identify f as being linear, quadratic, or neither. If f is quadratic, identify the leading coefficient a and evaluate f(-2). 1. f(x) = 1 – 2x + 3x? 2. f(x) = -5x + 11 3. f(x) = - x 4. f(x) = (x² + 1)² 5. f(x) = } - * 6. f(x) = }r?arrow_forward
- Exercises 105–107 will help you prepare for the material covered in the next section. 105. Find all values of x satisfying 1 – 4x = 3 or 1 – 4x = -3. 106. Find all values of x satisfying 3x – 1 = x + 5 or 3x – 1 = -(x + 5). 107. a. Substitute -5 for x and determine whether -5 satisfies |2x + 3| 2 5.arrow_forwardf(z + h) – f(z) can be written in the form (VBz + Ch) + (/E)' where A, B, and C are constants. (Note: It's possible for one or more of these constants to be 0.) Find the constants. A = !! B = !! C = !! f(z + h) – f(x) Use your answer from above to find lim h0 f(r +h) – f(x) lim Finally, find each of the following: S'(1) – f'(2) = f (3) =arrow_forwarda) Find the domain of f, g, f + g, f – & fg, ff, f/ g b) Find (f + g)(x), (f – g)(x), (fg)(x), (ff)(x), For each pair of functions in Exercises 17–32: 15. (8 and g/f. Find f+ g)(x), (f – g)(x), (fg)(x), (ff)(x), (f/8)(x), and (g/f)(x). 17. f(x) = 2x + 3, g(x) = 3 – 5x %3D 18. f(x) = -x + 1, g(x) = 4x – 2 19. f(x) = x – 3, g(x) = Vx + 4 20. f(x) = x + 2, g(x) = Vx – 1 21. f(x) = 2x – 1, g(x) = – 2x² 22. f(x) = x² – 1, g(x) = 2x + 5 23. f(x) = Vx – 3, g(x) : = Vx + 3arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage