Problem 1AYU: Find f( 3 ) if f( x )=4 x 2 +5x . (pp. 60-62) Problem 2AYU: Find f(3x) if f(x)=42 x 2 . (pp. 60-62) Problem 3AYU: Find the domain of the function f(x)= x 2 1 x 2 25 . (pp. 64-66) Problem 4AYU: 4. Given two functions f and g, the ___________, denoted f, is defined by (f(x) = .
Problem 5AYU: True or False If f(x)= x 2 and g(x)= x+9 , then (fg)(4)=5 . Problem 6AYU: 6. If and , which of the following
does (fg) (x) equal?
(a) (b) (c) (d)
Problem 7AYU: 7. If H=fg and , which of the following
cannot be the component functions f and g?
;
;
;
;
Problem 8AYU: 8. True or False The domain of the composite function
(fg) (x) is the same as the domain of g(x).
Problem 9AYU: 9. In Problems 9 and 10, evaluate each expression using the values given in the table.
(a)(f◦g)(1) ... Problem 10AYU: In Problems 9 and 10, evaluate each expression using the values given in the table. a. ( fg )( 1 )... Problem 11AYU: (
11.
In Problems 11 and 12, evaluate each ex
pression using the graphs of y =
f
(
x
)
and y... Problem 12AYU: In Problems 11 and 12, evaluate each expression using the graphs of y=f(x) and y=g(x) shown in the... Problem 13AYU: In Problems 13-22, for the given functions f and g , find: a. ( fg )( 4 ) b. ( gf )( 2 ) c. ( ff )(... Problem 14AYU: In Problems 13-22, for the given functions f and g , find: a. ( fg )( 4 ) b. ( gf )( 2 ) c. ( ff )(... Problem 15AYU: In Problem 13-22, for the given functions f and g, find: (fg)(4) (gf)(2) (ff)(1) (gg)(0)... Problem 16AYU: In Problems 13-22, for the given functions f and g , find: a. ( fg )( 4 ) b. ( gf )( 2 ) c. ( ff )(... Problem 17AYU: In Problems 13 – 22, for the given functions f and g, find:
17.
Problem 18AYU: In Problems 13-22, for the given functions f and g , find: a. ( fg )( 4 ) b. ( gf )( 2 ) c. ( ff )(... Problem 19AYU: In Problems 13 22, for the given functions f and g, find: (fg)(4) (gf)(2) (ff)(1) (gg)(0)... Problem 20AYU: In Problems 13-22, for the given functions f and g , find: a. ( fg )( 4 ) b. ( gf )( 2 ) c. ( ff )(... Problem 21AYU: In Problems 13-22, for the given functions f and g , find: a. ( fg )( 4 ) b. ( gf )( 2 ) c. ( ff )(... Problem 22AYU: In Problems 13-22, for the given functions f and g, find:
(a) (f◦g) (4) (b)( g◦f) (2) ... Problem 23AYU: In problems 2338, for the given functions f and g, find: fg gf ff gg State the domain of each... Problem 24AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 25AYU: In Problems 23-38, for the given functions f and g , find: a. fg b. gf c. ff d. gg State the domain... Problem 26AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 27AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 28AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 29AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 30AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 31AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 32AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 33AYU: In Problems 23 – 38, for the given functions f and g, find:
State the domain of each composite... Problem 34AYU: In Problems 23-38, for the given functions f and g , find: a. fg b. gf c. ff d. gg State the domain... Problem 35AYU: In Problems 23 38, for the given functions f and g, find: (fg) (gf) (ff) (gg) State the domain of... Problem 36AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 37AYU: In Problems 23-38, for the given functions f and g, find:
(a) f◦g (b) g◦f (c) f◦f (d)... Problem 38AYU: In Problems 23-38, for the given functions f and g , find: a. fg b. gf c. ff d. gg State the domain... Problem 39AYU: In Problems 39-46, show that (fg)( x )=(gf)( x )=x . f( x )=2x ; g(x)= 1 2 x Problem 40AYU: In Problems 39-46, show that (fg)( x )=(gf)( x )=x . f( x )=4x ; g(x)= 1 4 x Problem 41AYU: In Problems 39-46, show that (fg)( x )=(gf)( x )=x . f( x )= x 3 ; g(x)= x 3 Problem 42AYU: In Problems 39-46, show that (fg)( x )=(gf)( x )=x . f( x )=x+5 ; g( x )=x5 Problem 43AYU: In Problems 39 – 46, show that.
43.
Problem 44AYU: In Problems 39-46, show that (f◦g) (x) = (g◦f) (x) = x.
44. f(x) = 4 - 3x ; g(x) = (4 – x)
Problem 45AYU: In Problems 39-46, show that (f◦g) (x) = (g◦f) (x) = x.
45. f(x) = ax + b; a≠0
Problem 46AYU: In Problems 39-46, show that (f◦g) (x) = (g◦f) (x) = x.
46.;
Problem 47AYU: In Problems 47-52, find functions f and g so that fg=H . H(x)= (2x+3) 4 Problem 48AYU: In Problems 47-52, find functions f and g so that f◦g = H.
48. H(x) = (1 + x2)3
Problem 49AYU: In Problems 47-52, find functions f and g so that fg=H . H(x)= x 2 +1 Problem 50AYU: In Problems 47-52, find functions f and g so that fg=H . H(x)= 1 x 2 Problem 51AYU: In Problems 47-52, find functions f and g so that fg=H . H(x)=| 2x+1 | Problem 52AYU: In Problems 47-52, find functions f and g so that fg=H . H(x)=| 2 x 2 +3 | Problem 53AYU: 53. If and g(x) =2, find (f◦g) (x)
and (g◦f) (x).
Problem 54AYU: 54. If , find (f◦f) (x).
Problem 55AYU: If f(x)=2x2+5;g(x)=3x+a, find a so that the graph of fg crosses the y-axis at 23. Problem 56AYU: 56. If and find a so that the graph of crosses the y-axis at 68.
Problem 57AYU: In Problems 57 and 58, use the functions f and g to find:
(a) f◦g (b) g◦f
(c) the domain of f◦g and... Problem 58AYU: In Problems 57 and 58, use the functions f and g to find: a. fg b. gf c. the domain of fg and of gf... Problem 59AYU: 59. Surface Area of a Balloon The surface area S (in square
meters) of a hot-air balloon is given... Problem 60AYU: 60. Volume of a Balloon The volume V (in cubic meters) of the hot-air balloon described in Problem... Problem 61AYU: Automobile Production The number N of cars produced at a certain factory in one day after t hours of... Problem 62AYU: Environmental Concerns The spread of oil leaking from a tanker is in the shape of a circle. If the... Problem 63AYU: Production Cost The price p , in dollars, of a certain product and the quantity x sold obey the... Problem 64AYU: Cost of a Commodity The price p , in dollars, of a certain commodity and the quantity X sold obey... Problem 65AYU: Volume of a Cylinder The volume V of a right circular cylinder of height h and radius r is V= r 2 h... Problem 66AYU: Volume of a Cone The volume V of a right circular cone is V= 1 3 r 2 h . If the height is twice the... Problem 67AYU: Foreign Exchange Traders often buy foreign currency in the hope of making money when the currencys... Problem 68AYU: 68. Temperature Conversion The function converts a temperature in degrees Fahrenheit, F, to a... Problem 69AYU: Discounts The manufacturer of a computer is offering two discounts on last year’s model computer.... Problem 70AYU: Taxes Suppose that you work for 15 per hour. Write a function that represents gross salary G as a... Problem 71AYU: Suppose f(x)=x3+x216x16 and g(x)=x24. Find the zeros of (fg)(x). Problem 72AYU: Suppose f(x)=2x33x28x+12 and g(x)=x+5. Find the zeros of (fg)(x). Problem 73AYU: 71. Let and , where a and b are
integers. if f(1) = 8 and f(g(20)) - g(f(20)) = -14, find the... Problem 74AYU: 72. If f and g are odd functions, show that the composite
function f◦g is also odd.
Problem 75AYU: 73. If f is an odd function and g is an even function, show that the composite functions f◦g and g◦f... Problem 76AYU: Problems 74-77 are based on material learned earlier in the course. The purpose of these problems is... Problem 77AYU Problem 78AYU: Use a graphing utility to graph over the interval .Approximate any local maxima and local minima.... Problem 79AYU: Problems 74-77 are based on material learned earlier in the course. The purpose of these problems is... format_list_bulleted