Problem 51
Give the center and radius of the circle described by the equation and graph each equation. Use the graph to identify the relation's domain and range. (x + 1)² + y² = 25
Problem 51a
In Exercises 51–54, graph the given square root functions, f and g, in the same rectangular coordinate system. Use the integer values of x given to the right of each function to obtain ordered pairs. Because only nonnegative numbers have square roots that are real numbers, be sure that each graph appears only for values of x that cause the expression under the radical sign to be greater than or equal to zero. Once you have obtained your graphs, describe how the graph of g is related to the graph of f. f(x) = √x (x = 0, 1, 4, 9) and g(x) = √x −1 (x = 0, 1, 4, 9)
Problem 51abc
In Exercises 39-52, a. Find an equation for ƒ¯¹(x). b. Graph ƒ and ƒ¯¹(x) in the same rectangular coordinate system. c. Use interval notation to give the domain and the range off and ƒ¯¹. f(x) = ∛x + 1
Problem 52
Use the graph of y = f(x) to graph each function g. g(x)=2f(x-1)
Problem 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))
Problem 53
Complete the square and write the equation in standard form. Then give the center and radius of each circle and graph the equation. x² + y²+6x+2y+6 = 0
Problem 53
Begin by graphing the standard quadratic function, f(x) = x². Then use transformations of this graph to graph the given function. g(x) = x² - 2
Problem 53a
Find
a. (fog) (x)
b. (go f) (x)
c. (fog) (2)
d. (go f) (2).
f(x) = x+4, g(x) = 2x + 1
Problem 54
In Exercises 51–54, graph the given square root functions, f and g, in the same rectangular coordinate system. Use the integer values of x given to the right of each function to obtain ordered pairs. Because only nonnegative numbers have square roots that are real numbers, be sure that each graph appears only for values of x that cause the expression under the radical sign to be greater than or equal to zero. Once you have obtained your graphs, describe how the graph of g is related to the graph of f. f(x) = √x (x = 0, 1, 4, 9) and g (x) = √(x + 2) (x = = −2, −1, 2, 7)
Problem 54
Find the average rate of change of f(x) = x^2 - 4x from x_1 = 5 to x_2 = 9.
Problem 55
Use the vertical line test to identify graphs in which y is a function of x.
Problem 55
Begin by graphing the standard quadratic function, f(x) = x². Then use transformations of this graph to graph the given function. g(x) = (x − 2)²
Problem 55
Complete the square and write the equation in standard form. Then give the center and radius of each circle and graph the equation. x² + y² – 10x – 6y – 30 = 0
Problem 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)
Problem 55
In Exercises 55–59, use the graph of to graph each function g.
g(x) = f(x + 2) + 3
Problem 55a
Graph each equation in a rectangular coordinate system. f(x) = 1
Problem 55ab
Find a. (fog) (x) b. (go f) (x) f(x)=4x-3, g(x) = 5x² - 2
Problem 55cd
Find a. (fog) (2) b. (go f) (2) f(x)=4x-3, g(x) = 5x² - 2
Problem 57
Graph each equation in a rectangular coordinate system. 3x -18=0
- In Exercises 55–59, use the graph of to graph each function g.
Problem 57
g(x) = -f(2x)
Problem 57
Begin by graphing the standard quadratic function, f(x) = x². Then use transformations of this graph to graph the given function. h(x) = -(x − 2)²
Problem 57
Complete the square and write the equation in standard form. Then give the center and radius of each circle and graph the equation. x² + y²+8x-2y-8=0
Problem 57a
Use the vertical line test to identify graphs in which y is a function of x.
Problem 57ab
Find a. (fog) (x) b. (go f) (x) f(x) = x²+2, g(x) = x² – 2
Problem 57cd
Find a. (fog) (2) b. (go f) (2) f(x) = x²+2, g(x) = x² – 2
Problem 58
Use the vertical line test to identify graphs in which y is a function of x.
Problem 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)
Problem 59
Complete the square and write the equation in standard form. Then give the center and radius of each circle and graph the equation. x² - 2x + y² – 15 = 0
Problem 59
Use the vertical line test to identify graphs in which y is a function of x.
Problem 59ab
Find a. (fog) (x) b. (go f) (x) f(x) = 4-x, g(x) = 2x² +x+5
Ch. 2 - Functions and Graphs
