5-2-10

 

Controlling What Appears on a Graph Screen

Example

Enlarge the graphs of the two expressions shown below five times on

 

both the x- and y-axis to see if they are tangent.

 

Y1 = (x + 4)(x + 1)(x – 3), Y2 = 3x + 22

Use the following V-Window settings.

Xmin = –8,

Xmax = 8,

Xscale = 1

Ymin = –30,

Ymax = 30,

Yscale = 5

Procedure

1mGRAPH

!3(V-WIN)-iwiwbwc -dawdawfwJ

3(TYPE)1(Y=)(v+e)(v+b) (v-d)w dv+ccw

6(DRAW)

2!2(ZOOM)2(FACT)fwfwJ

3!2(ZOOM)3(IN)

4f~f,d~dw

Result Screen

#You can repeat factor zoom to enlarge or reduce a graph even further.

20050601