5.2 Exercises

From Förberedande kurs i matematik 1

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===Exercise 5.2:1===
===Exercise 5.2:1===
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===Exercise 5.2:2===
===Exercise 5.2:2===
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===Exercise 5.2:3===
===Exercise 5.2:3===
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===Exercise 5.2:4===
===Exercise 5.2:4===
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===Exercise 5.2:5===
===Exercise 5.2:5===
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===Exercise 5.2:6===
===Exercise 5.2:6===
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===Exercise 5.2:7===
===Exercise 5.2:7===
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===Exercise 5.2:8===
===Exercise 5.2:8===
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===Exercise 5.2:9===
===Exercise 5.2:9===

Current revision

       Theory          Exercises      


Exercise 5.2:1

Which of the arrows \displaystyle \Rightarrow, \displaystyle \Leftarrow or \displaystyle \Leftrightarrow should you insert between the following equations? (Instead of the question mark.)

a) \displaystyle \tan x(\sin x+1) = \tan x\quad ?\quad\sin x+1=1
b) \displaystyle \sqrt{x-1} = x+1\quad ?\quad x-1 = (x+1)^2
c) \displaystyle x^2-6x+1=0\quad ?\quad (x-3)^2-9+1=0

Exercise 5.2:2

Criticize the following excerpt from a solution written by a student.

Exercise 5.2:3

Criticize the following excerpt from a solution written by a student.

Exercise 5.2:4

Criticize the following excerpt from a solution written by a student.

Exercise 5.2:5

Criticize the following excerpt from a solution written by a student.

Exercise 5.2:6

Criticize the following excerpt from a solution written by a student.

Exercise 5.2:7

Criticize the following excerpt from a solution written by a student.

Exercise 5.2:8

Criticize the following excerpt from a solution written by a student.

Exercise 5.2:9

Criticize the following excerpt from a solution written by a student.