Question 916627
{{{"f(x)"=system(matrix(2,3,    2x-3,if,x <= 1,
                             x+1,if,x > 1))}}}
<pre>Here's the graph:

{{{drawing(320,400,-4,4,-6,4,

graph(320,400,-4,4,-6,4),circle(1,2,0.15),

circle(1,-1,0.15),circle(1,-1,0.13),circle(1,-1,0.11),circle(1,-1,0.09),circle(1,-1,0.07),circle(1,-1,0.05),circle(1,-1,0.03),circle(1,-1,0.01),



line(-12,-27, 1,-1), line(1.12,2.12,9,10))}}} 

I'll draw the range on the y-axis in green:

{{{drawing(320,400,-4,4,-6,4,

graph(320,400,-4,4,-6,4),circle(1,2,0.15),

circle(1,-1,0.15),circle(1,-1,0.13),circle(1,-1,0.11),circle(1,-1,0.09),circle(1,-1,0.07),circle(1,-1,0.05),circle(1,-1,0.03),circle(1,-1,0.01),

green(line(0,-15,0,-1),circle(0,-1,0.15),circle(0,-1,0.13),circle(0,-1,0.11),circle(0,-1,0.09),circle(0,-1,0.07),circle(0,-1,0.05),circle(0,-1,0.03),circle(0,-1,0.01), circle(0,2,0.15),line(0,2.12,0,20)),



line(-12,-27, 1,-1), line(1.12,2.12,9,10))}}} 

The RANGE is the part of the y-axis that is BESIDE the graph:

Range:  (-&#8734;,-1] U (2,&#8734;) 

Edwin</pre>