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"Times" 12 ? ? 5 0 c n 106 1 0 0 k 468
i"?n             page ?p?a"
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~Q
]|Expr|[#b @`bb#_b#_b#_})%# b'4" *|: ;bP8&c0!*Two argument arctan|
  |}& b!( b"0 b#8 b$@ b%H b&P!WW}]|[~p0
0 ~V?v0 ('q)~p0
1 ~V?v0 (x)~p0
1 ~V?v0 (y)~p0
1 ~V?c1 ('p)~p0
1 ~V?f274 (arctan)~p0
1 ~V?f0 (atan)~p0
1 ~V?v0 (undefined)~p0
1 ~A(atan(?y,?x)=Conditional(arctan(?y/?x),(?x>0);'p/2,(?x=0)*(~
 ?y>0);-'p/2,(?x=0)*(?y<0);undefined,(?x=0)*(?y=0);arctan(?y/?x)+~
 'p,(?x<0)*(?y>=0);arctan(?y/?x)-'p,(?x<0)*(?y<0)))~p0
0 ~d~A(x=-1)~p0
0 ~d~A(y=-1)~p0
255 ~d~A('q_1=arctan(y/x))~p0
0 ~A('q_1=0.78539816339744828)~p0
1 ~sb/_!!   }
$&!  c#T"!c#L"_c/__c/__}
^ _~A('q_1=1/4*'p)~p0
2 ~sb/_!!   }
.&!  c#T"!c'( _c/__c/__}
^ _~A('q_2=atan(y,x))~p0
0 ~A('q_2=-2.3561944901923448)~p0
1 ~sb/_!!   }
$&!  c#T"!c#L"_c/__c/__}
^ _~A('q_2=-3/4*'p)~p0
2 ~sb/_!!   }
.&!  c#T"!c"T!_c/__c/__}
^ _~c5
12 -1 11 -1 10 -1 3 -1 9 -1 2 -1 ~c1
13 -1 12 -1 ~c7
15 -1 14 -1 10 -1 3 -1 9 -1 2 -1 8 -1 6 -1 ~c1
16 -1 15 -1 ~e