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FUNCTIONS

Authored by MR_ADE’S_CLASS MR_ADE’S_CLASS

Mathematics

11th Grade

Used 1+ times

FUNCTIONS
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Arjun, Evelyn, and Benjamin are three friends who love solving math problems. They came across a function g(x)=(5x−2)(3x+1)/, x≠−13;g(x)=\frac{(5x-2)}{(3x+1)}/,\ x\ne-\frac{1}{3}; . They challenged each other to find the inverse of function g. Can you help them out?

(x+2)(5−3x)/, x≠53\frac{(x+2)}{(5-3x)}/,\ x\ne\frac{5}{3}

(5−3x)(x+2)/, x≠−2\frac{(5-3x)}{(x+2)}/,\ x\ne-2

(x−2)(5+3x)/, x≠−53\frac{(x-2)}{(5+3x)}/,\ x\ne-\frac{5}{3}

(x+2)(5−2x)/, x≠52\frac{(x+2)}{(5-2x)}/,\ x\ne\frac{5}{2}

2.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Given that f:x→2xf:x\rightarrow2^x and g:x→3x−2,g:x\rightarrow3x-2, find fg(2).

8

16

2

4

3.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

If f(x)=1(2−x), x≠2,f(x)=\frac{1}{(2-x)},\ x\ne2, find f−1(−12).f^{-1}(-\frac{1}{2}).

4

2

0

1

4.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Two functions f and g are defined by f:x→3x−1f:x\rightarrow3x-1 and g:x→2x3,g:x\rightarrow2x^3, evaluate fog(−2).fog\left(-2\right).

-49
27
-7
5

5.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Two functions f and g are defined on the set, R, of real numbers by f:x→2x−1f:x\rightarrow2x-1 and g:x→x2+1.g:x\rightarrow x^2+1. find the value of f−1og(3).f^{-1}og(3).

12

11

5.5

4.5

6.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

A function f(x) is defined on R, the set of real numbers by f:x→(x+3))(x−2),(x≠2).f:x\rightarrow\frac{\left(x+3)\right)}{(x-2)},(x\ne2). Find f−1(x).f^{-1}(x).

f−1:x→(2x+3))(x−1), (x≠1)f^{-1}:x\rightarrow\frac{\left(2x+3)\right)}{\left(x-1\right)},\ (x\ne1)

f−1:x→(x+3))(x+2), (x≠−2)f^{-1}:x\rightarrow\frac{\left(x+3)\right)}{\left(x+2\right)},\ (x\ne-2)

f−1:x→(x−1))(2x+3), (x≠−32)f^{-1}:x\rightarrow\frac{\left(x-1)\right)}{\left(2x+3\right)},\ (x\ne-\frac{3}{2})

f−1:x→(x−2)(x+3), (x≠−3)f^{-1}:x\rightarrow\frac{\left(x-2\right)}{\left(x+3\right)},\ (x\ne-3)

7.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

Given that P={x:x is a prime factor of 6}P=\left\{x:x\ is\ a\ prime\ factor\ of\ 6\right\} is the domain of g(x)=x2+3x−5,g(x)=x^2+3x-5, find the range of g(x).

{5, 13}

{5, 13, 49}

{2, 3}

{5, 13, 49}

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