문제 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))
문제 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)
문제 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)
문제 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)
문제 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)])
문제 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 .
문제 100
Solve by completing the square: 2x² – 5x + 1 = 0.
문제 101
Solve: 5x3/4- 15 = 0.
문제 102
Solve and graph the solution set on a number line: 3|2x-1| ≥ 21
문제 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.
문제 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.
문제 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)
문제 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)
문제 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)
문제 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)
문제 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)
문제 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)
문제 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)
문제 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)
문제 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)
문제 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)
문제 19
Find the midpoint of each line segment with the given endpoints. (6, 8) and (2, 4)
문제 21
Find the midpoint of each line segment with the given endpoints. (-2, -8) and (−6, −2)
문제 23
Find the midpoint of each line segment with the given endpoints. (-3, -4) and (6, −8)
문제 25
Find the midpoint of each line segment with the given endpoints. (-7/2, 3/2) and (-5/2, -11/2)
문제 27
Find the midpoint of each line segment with the given endpoints. (8, 3√5) and (−6, 7√5)
문제 28
Find the midpoint of each line segment with the given endpoints. (7√3, −6) and (3√3, −2)
문제 31
Write the standard form of the equation of the circle with the given center and radius. Center (0, 0), r = 7
문제 33
Write the standard form of the equation of the circle with the given center and radius. Center (3, 2), r = 5
문제 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
