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2.2 Übungen

Aus Online Mathematik Brückenkurs 1

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Version vom 09:18, 22. Okt. 2008

 

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Übung 2.2:1

Solve the equations

a) x2=1 b) 2x+1=13
c) 31x1=x d) 5x+7=2x6

Übung 2.2:2

Solve the equations

a) 65x9x+2=21 b) 78x+345x7=2
c) (x+3)2(x5)2=6x+4 d) (x2+4x+1)2+3x42x2=(2x2+2x+3)2

Übung 2.2:3

Solve the equations

a) x3x+3x2x+5=0
b) 4x4x712x3=1
c) 1x11x+1x2+21=3x36x1 
d) x2314x+2112x32212x+3112x31=0 

Übung 2.2:4

a) Write the equation for the line y=2x+3 in the form ax+by=c.
b) Write the equation for the line 3x+4y5=0 in the form y=kx+m.

Übung 2.2:5

a) Determine the equation for the straight line that goes between the points (23) and(30).
b) Determine the equation for the straight line that has slope 3 and goes through the point (12).
c) Determine the equation for the straight line that goes through the point (12) and is parallel to the line y=3x+1.
d) Determine the equation for the straight line that goes through the point (24) and is perpendicular to the line y=2x+5.
e) Determine the slope, k, for the straight line that cuts the x-axis at the point (50) and y-axis at the point (08).

Übung 2.2:6

Find the points of intersection between the pairs of lines in the following

a) y=3x+5  and the x-axis b) y=x+5  and the y-axis
c) 4x+5y+6=0  and the y-axis d) x+y+1=0  and  x=12
e) \displaystyle 2x+y-1=0\ and \displaystyle \ y-2x-2=0

Übung 2.2:7

Sketch the graph of the functions

a) \displaystyle f(x)=3x-2 b) \displaystyle f(x)=2-x c) \displaystyle f(x)=2

Übung 2.2:8

In the xy-plane, fill in all the points whose coordinates \displaystyle \,(x,y)\, satisfy

a) \displaystyle y \geq x b) \displaystyle y < 3x -4 c) \displaystyle 2x+3y \leq 6

Übung 2.2:9

Calculate the area of the triangle which

a) has corners at the points \displaystyle \,(1,4)\,, \displaystyle \,(3,3)\, and \displaystyle \,(1,0)\,.
b) is bordered by the lines \displaystyle \ x=2y\,, \displaystyle \ y=4\ and \displaystyle \ y=10-2x\,.
c) is described by the inequalities \displaystyle \ x+y \geq -2\,, \displaystyle \ 2x-y \leq 2\ and \displaystyle \ 2y-x \leq 2\,.