<s>
Graphmatica	B-Operating_System
is	O
a	O
graphing	O
program	O
created	O
by	O
Keith	O
Hertzer	O
,	O
a	O
graduate	O
of	O
the	O
University	O
of	O
California	O
,	O
Berkeley	O
.	O
</s>
<s>
It	O
runs	O
on	O
Microsoft	B-Application
Windows	I-Application
(	O
all	O
versions	O
)	O
,	O
Mac	B-Application
OS	I-Application
X	I-Application
10.5	I-Application
and	O
higher	O
,	O
and	O
iOS	B-Application
5.0	O
and	O
higher	O
.	O
</s>
<s>
Graphmatica	B-Operating_System
for	O
Windows	O
and	O
Macs	O
is	O
distributed	O
free	O
of	O
charge	O
for	O
evaluation	O
purposes	O
.	O
</s>
<s>
Graphmatica	B-Operating_System
for	O
iOS	B-Application
is	O
distributed	O
via	O
the	O
Apple	O
App	O
Store	O
.	O
</s>
<s>
Graphmatica	B-Operating_System
can	O
graph	O
Cartesian	B-Application
functions	I-Application
,	O
relations	B-Algorithm
,	O
and	O
inequalities	O
,	O
plus	O
polar	O
,	O
parametric	O
and	O
ordinary	O
differential	O
equations	O
.	O
</s>
