From Förberedande kurs i matematik 1
Övning 1.1:1
Work out (without the help of a calculator)
a)
| 3−7−4+6−5
| b)
| 3−(7−4)+(6−5)
|
c)
| 3−(7−(4+6)−5)
| d)
| 3−(7−(4+6))−5
|
Svar 1.1:1
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Övning 1.1:2
Svar 1.1:2
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Övning 1.1:3
Which of the following belong to the natural numbers? integers? rational numbers? irrational numbers?
a)
| 8
| b)
| −4
| c)
| 8−4
|
d)
| 4−8
| e)
| 8 (−4)
| f)
| (−8) (−4)
|
Svar 1.1:3
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Övning 1.1:4
Svar 1.1:4
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Övning 1.1:5
Arrange the following numbers in ascending order
a)
| 2, 53, 35 och 37
|
b)
| −21, −51, −310 och −31
|
c)
| 21, 32, 53, 85 och \displaystyle \tfrac{21}{34}
|
Svar 1.1:5
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Övning 1.1:6
Give the decimal expansion of the following to three decimal places.
a)
| \displaystyle \frac{7}{6}
| b)
| \displaystyle \frac{9}{4}
| c)
| \displaystyle \frac{2}{7}
| d)
| \displaystyle \sqrt{2}
|
Svar 1.1:6
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Övning 1.1:7
Which of the following numbers are rational? Give them as a fraction of two integers.
a)
| \displaystyle 3{,}14
|
b)
| \displaystyle 3{,}1416\,1416\,1416\,\ldots
|
c)
| \displaystyle 0{,}2\,001\,001\,001\,\ldots
|
d)
| \displaystyle 0{,}10\,100\,1000\,10000\,1\ldots\, (en 1:a, en 0:a, en 1:a, två 0:or, en 1:a, tre 0:or osv.)
|
Svar 1.1:7
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