Operation on Functions and Composition of Functions

Operation on Functions and Composition of Functions

8th - 11th Grade

10 Qs

quiz-placeholder

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Operation on Functions and Composition of Functions

Operation on Functions and Composition of Functions

Assessment

Quiz

Mathematics

8th - 11th Grade

Practice Problem

Hard

CCSS
HSF-BF.A.1B, HSF-BF.A.1C

Standards-aligned

Created by

Katrina Elano

Used 79+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Let

 f(x)=2x1 and g(x)=x2+x2. Find (f+g)(x).f\left(x\right)=2x-1\ and\ g\left(x\right)=x^2+x-2.\ Find\ \left(f+g\right)\left(x\right).  

 x2 +3x+3x^{2\ }+3x+3  

 x2 +3x3x^{2\ }+3x-3  

 4x2 34x^{2\ }-3  

 3x33x-3  

Tags

CCSS.HSF-BF.A.1B

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Let

 f(x)=2x1 and g(x)=x2+x2. Find (fg)(x).f\left(x\right)=2x-1\ and\ g\left(x\right)=x^2+x-2.\ Find\ \left(f-g\right)\left(x\right).  

 x2 x+1x^{2\ }-x+1  

 x2 +x+1x^{2\ }+x+1  

 x2 x1x^{2\ }-x-1  

 x2 +x+1-x^{2\ }+x+1  

Tags

CCSS.HSF-BF.A.1B

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Let

 f(x)=2x1 and g(x)=x2+x2. Find (fg)(x).f\left(x\right)=2x-1\ and\ g\left(x\right)=x^2+x-2.\ Find\ \left(f\cdot g\right)\left(x\right).  

 2x3 +x25x+22x^{3\ }+x^2-5x+2  

 2x3 +12x^{3\ }+1  

 2x3 +2x25x+12x^{3\ }+2x^2-5x+1  

 2x2 5x+22x^{2\ }-5x+2  

Tags

CCSS.HSF-BF.A.1C

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Let

 f(x)=2x1 and g(x)=x2+x2. Find (fg)(x).f\left(x\right)=2x-1\ and\ g\left(x\right)=x^2+x-2.\ Find\ \left(\frac{f}{g}\right)\left(x\right).  

 2xx2\frac{2x}{x-2}  

 x2+x22x1\frac{x^2+x-2}{2x-1}  

 2x1x2 +x2\frac{2x-1}{x^{2\ }+x-2}  

 2x21\frac{2}{x^2-1}  

Tags

CCSS.HSF-BF.A.1B

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Let

 f(x)=x1 and g(x)=x2+4. Find (fg)(x).f\left(x\right)=\sqrt{x-1}\ and\ g\left(x\right)=x^2+4.\ Find\ \left(\frac{f}{g}\right)\left(x\right).  

 x1\sqrt{x-1}  

 x4x-4  

 x2+4x1\frac{x^2+4}{\sqrt{x-1}}  

 x1x2+4\frac{\sqrt{x-1}}{x^2+4}  

Tags

CCSS.HSF-BF.A.1B

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Let

 f(x)=x1 and g(x)=x2+4. Find (f+g)(x).f\left(x\right)=\sqrt{x-1}\ and\ g\left(x\right)=x^2+4.\ Find\ \left(f+g\right)\left(x\right).  

 x1x2+4\sqrt{x-1}-x^2+4  

 x1+x2+4\sqrt{x-1}+x^2+4  

 x1x24\sqrt{x-1}-x^2-4  

 x1+x24\sqrt{x-1}+x^2-4  

Tags

CCSS.HSF-BF.A.1B

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Let

 f(x)=x1 and g(x)=x2+4. Find (fg)(x).f\left(x\right)=\sqrt{x-1}\ and\ g\left(x\right)=x^2+4.\ Find\ \left(f-g\right)\left(x\right).  

 x1x2+4\sqrt{x-1}-x^2+4  

 x1+x2+4\sqrt{x-1}+x^2+4  

 x1x24\sqrt{x-1}-x^2-4  

 x1+x24\sqrt{x-1}+x^2-4  

Tags

CCSS.HSF-BF.A.1B

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