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2.2 Exercises
From Förberedande kurs i matematik 1
(Difference between revisions)
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|width="33%" | <math>f(x)=2</math>
|width="33%" | <math>f(x)=2</math>
|}
|}
- </div>{{#NAVCONTENT:Svar|Svar 2.2:1|Lösning a|Lösning 2.2:1a|Lösning b|Lösning 2.2:1b|Lösning c|Lösning 2.2:1c}}
+ </div>{{#NAVCONTENT:Svar|Svar 2.2:7 |Lösning a|Lösning 2.2:7a |Lösning b|Lösning 2.2:7b |Lösning c|Lösning 2.2:7c}}
+
+ ===Övning 2.2:8===
+ <div class="ovning">
+ Rita in i ett ''xy''-plan alla punkter vars koordinater <math>\,(x,y)\,</math> uppfyller
+ {| width="100%" cellspacing="10px"
+ |a)
+ |width="33%" | <math>y \geq x </math>
+ |b)
+ |width="33%" | <math>y < 3x -4 </math>
+ |c)
+ |width="33%" | <math>$2x+3y \leq 6 </math>
+ |}
+ </div>{{#NAVCONTENT:Svar|Svar 2.2:8|Lösning a|Lösning 2.2:8a|Lösning b|Lösning 2.2:8b|Lösning c|Lösning 2.2:8c }}
Revision as of 14:05, 31 March 2008
Övning 2.2:1
Lös ekvationerna
a)
x − 2 = − 1
b)
2 x + 1 = 1 3
c)
3 1 x − 1 = x
d)
5 x + 7 = 2 x − 6
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Övning 2.2:2
Lös ekvationerna
a)
6 5 x − 9 x + 2 = 2 1
b)
7 8 x + 3 − 4 5 x − 7 = 2
c)
( x + 3 ) 2 − ( x − 5 ) 2 = 6 x + 4
d)
( x 2 + 4 x + 1 ) 2 + 3 x 4 − 2 x 2 = ( 2 x 2 + 2 x + 3 ) 2
Svar 2.2:2 Loading...
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Övning 2.2:3
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Övning 2.2:4
a)
Skriv ekvationen för linjeny = 2 x + 3 på formen a x + b y = c
b)
Skriv ekvationen för linjen3 x + 4 y − 5 = 0 på formen y = k x + m
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Övning 2.2:5
a)
Bestäm ekvationen för den räta linje som går genom punkterna\displaystyle \,(2,3)\, och \displaystyle \,(3,0)\,
b)
Bestäm ekvationen för den räta linje som har riktningskoefficient\displaystyle \,-3\, och går genom punkten \displaystyle \,(1,-2)\,
c)
Bestäm ekvationen för den räta linje som går genom punkten \displaystyle \,(-1,2)\, och är parallell med linjen \displaystyle \,y=3x+1\,
d)
Bestäm ekvationen för den räta linje som går genom punkten \displaystyle \,(2,4)\, och är vinkelrät mot linjen \displaystyle \,y=2x+5\,
e)
Bestäm riktningskoefficienten, \displaystyle \,k\, för den räta linje som skär x -axeln i punkten \displaystyle \,(5,0)\, och y -axeln i punkten \displaystyle \,(0,-8)\,
Svar 2.2:5 Loading...
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Övning 2.2:6
Finn skärningspunkten mellan följande linjer
a)
\displaystyle y=3x+5\ och x -axeln
b)
\displaystyle y=-x+5\ och y -axeln
c)
\displaystyle 4x+5y+6=0\ och y -axeln
d)
\displaystyle x+y+1=0\ och \displaystyle \ x=12
e)
\displaystyle 2x+y-1=0\ och \displaystyle \ y-2x-2=0
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Övning 2.2:7
Skissera grafen till följande funktioner
a)
\displaystyle f(x)=3x-2
b)
\displaystyle f(x)=2-x
c)
\displaystyle f(x)=2
Svar 2.2:7 Loading...
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Övning 2.2:8
Rita in i ett xy -plan alla punkter vars koordinater \displaystyle \,(x,y)\, uppfyller
a)
\displaystyle y \geq x
b)
\displaystyle y < 3x -4
c)
\displaystyle $2x+3y \leq 6
Svar 2.2:8 Loading...
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