Problema 53
In Exercises 53–58, f and g are defined by the following tables. Use the tables to evaluate each composite function. f(g(1))
Problema 55
In Exercises 53–58, f and g are defined by the following tables. Use the tables to evaluate each composite function. (go f) (-1)
Problema 59
Let f(x) = 2x - 5 g(x) = 4x - 1 h(x) = x² + x + 2. Evaluate the indicated function without finding an equation for the function. (fog) (0)
Problema 61
Let f(x) = 2x - 5 g(x) = 4x - 1 h(x) = x² + x + 2. Evaluate the indicated function without finding an equation for the function. ƒ-1 (1)
Problema 64
Let f(x) = 2x - 5 g(x) = 4x - 1 h(x) = x² + x + 2. Evaluate the indicated function without finding an equation for the function. f(g[h (1)])
Problema 95
Determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement.
If and , find and .
Problema 100
Solve by completing the square: 2x² – 5x + 1 = 0.
Problema 101
Solve: 5x3/4- 15 = 0.
Problema 102
Solve and graph the solution set on a number line: 3|2x-1| ≥ 21
Problema 104
Exercises 103–105 will help you prepare for the material covered in the next section. Use a rectangular coordinate system to graph the circle with center (1, -1) and radius 1.
Problema 105
Exercises 103–105 will help you prepare for the material covered in the next section. Solve by completing the square: y² – 6y — 4 = 0.
Problema 1
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (2, 3) and (14, 8)
Problema 3
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (4, -1) and (-6, 3)
Problema 6
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (0, 0) and (3,-4)
Problema 7
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (-2, -6) and (3, −4)
Problema 11
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (3.5, 8.2) and (-0.5, 6.2)
Problema 13
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (0, −√3) and (√5, 0)
Problema 14
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (0, -√2) and (√7,0)
Problema 15
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (3√3, √5) and (−√3, 4√5)
Problema 17
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (7/3, 1/5) and (1/3, 6/5)
Problema 18
Find the distance between each pair of points. If necessary, express answers in simplified radical form and then round to two decimal places. (-1/4, -1/7) and (3/4, 6/7)
Problema 19
Find the midpoint of each line segment with the given endpoints. (6, 8) and (2, 4)
Problema 21
Find the midpoint of each line segment with the given endpoints. (-2, -8) and (−6, −2)
Problema 23
Find the midpoint of each line segment with the given endpoints. (-3, -4) and (6, −8)
Problema 25
Find the midpoint of each line segment with the given endpoints. (-7/2, 3/2) and (-5/2, -11/2)
Problema 27
Find the midpoint of each line segment with the given endpoints. (8, 3√5) and (−6, 7√5)
Problema 28
Find the midpoint of each line segment with the given endpoints. (7√3, −6) and (3√3, −2)
Problema 31
Write the standard form of the equation of the circle with the given center and radius. Center (0, 0), r = 7
Problema 33
Write the standard form of the equation of the circle with the given center and radius. Center (3, 2), r = 5
Problema 35
Write the standard form of the equation of the circle with the given center and radius. Center (-1, 4), r = 2
Ch. 2 - Functions and Graphs
