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WorksheetsFUNCTIONS
Total questions: 25
Worksheet time: 25mins
Arjun, Evelyn, and Benjamin are three friends who love solving math problems. They came across a function g(x)=(3x+1)(5x−2)/, x=−31; . They challenged each other to find the inverse of function g. Can you help them out?
(5−3x)(x+2)/, x=35
(x+2)(5−3x)/, x=−2
(5+3x)(x−2)/, x=−35
(5−2x)(x+2)/, x=25
Given that f:x→2x and g:x→3x−2, find fg(2).
8
16
2
4
If f(x)=(2−x)1, x=2, find f−1(−21).
4
2
0
1
Two functions f and g are defined by f:x→3x−1 and g:x→2x3, evaluate fog(−2).
Two functions f and g are defined on the set, R, of real numbers by f:x→2x−1 and g:x→x2+1. find the value of f−1og(3).
12
11
5.5
4.5
A function f(x) is defined on R, the set of real numbers by f:x→(x−2)(x+3)),(x=2). Find f−1(x).
f−1:x→(x−1)(2x+3)), (x=1)
f−1:x→(x+2)(x+3)), (x=−2)
f−1:x→(2x+3)(x−1)), (x=−23)
f−1:x→(x+3)(x−2), (x=−3)
Given that P={x:x is a prime factor of 6} is the domain of g(x)=x2+3x−5, find the range of g(x).
{5, 13}
{5, 13, 49}
{2, 3}
{5, 13, 49}
The inverse of a function is given by f−1:x→4(x+1), find f:x.
f:x→4x−1
f:x→4x+1
f:x→24x−1
f:x→4x−1
James, Sophia, and Liam are solving a math problem. They are trying to find the value of a function defined by f(x)=(x2−1)(3x+1). Can you help them? What is the value of f(−3)?
-1
1
-8
4
The function f:x→4−2x, is defined on the set of real numbers R. Find the domain of f:x
x≥2
x=2
x≤2
x≤−2
Find the domain of the function: f:x→4−x2
x≤−2, x≥2
x=−2 or x=2
−2≤x≤2
−2<x<2
Find the domain of the function: f:x→x2−4
x≤−2, x≥2
x=−2 or x=2
−2≤x≤2
−2<x<2
Find the inverse of the function f(x)=52−x
(2−5x)2
(5x+2)2
(5x−2)
(2−5x)
If g(x)=2x+1 and h(x)=3x-2, what is the result of combining the functions hog(x)?
6x + 1
4x + 1
5x + 1
6x + 2
If f(x+2)=x3−2x2+x−7, what is f(1).
−7
5
−5
−11
If f(x−2)=x3−2x2+x−1, what is f(1) ?
−7
5
−5
11
Given that f(x)=2x2−3 and g(x)=2x+1 where x∈R, find gof(x).
2x2+3
4x2−5
8x2+8x+1
2(2x+1)2−3
Emma and Michael are playing a math game. They have two functions, f and g, defined on the set R of real numbers. Function f is defined as f:x→12−2x, x=0 and function g is defined as g:x→5x−1. They want to find the value of gof(4). Can you help them?
49
50
2.5
3.5
Function h is defined on the set R of real numbers by h:x→(2x−1)1, x=21. Find h−1, the inverse of h.
h−1:x→2x(1+x), x→0
h−1:x→x(1+x), x→0
h−1:x→2x(x−1), x→0
h−1:x→x(x−1), x→0
Given that f(x)=2(x+1), find f−1(−2).
−3
−5
3
5
Given that f:→(x+2)(2x−1), find f−1, the inverse of f.
f−1(x)=(2−x)(2x+1)
f−1(x)=(2+x)(1−2x)
f−1(x)=(x−2)(1−2x)
f−1(x)=(x+2)(1+2x)
A function f(x) is defined on the set R, of real numbers, by f(x)=px2+qx+2, where p and q are constants. If f(-2)=0 and f(1)=3, find f(-4).
-2
0
4
William, Anika, and Hannah are playing a math game. They have two functions, f(x)=(1−x)2 and g(x)=x(x−1) . They want to find the inverse of the composition of these functions, (fog)−1(21) . Can you help them? Solve the problem and choose the correct option:
1
2
3
4
Given f(x)=(1−x)2 and g(x)=x(x−1), where x is a real number; find g−1of−1(1).
1
2
3
4
Given that f(x)=(2x+1)(4x+5) and g(x)=3x+1, where x∈R, find the inverse of fog.
(fog)−1(x)=(2x+1)(4x+5)
(fog)−1(x)=(2x+1)(4x−5)
(fog)−1(x)=(2x−4)(1−x)
(fog)−1(x)=(2x+4)(1+x)
