public static void main ( String [ ] args ) {
  double a = 0.0 ;
  double b = 1.0 ;
  double c = - 2 ;
  double x1 = 3.0 ;
  double y1 = 3.0 ;
  Pair < Double , Double > foot = findFoot ( a , b , c , x1 , y1 ) ;
  System . out . println ( foot . getKey ( ) + " " + foot . getValue ( ) ) ;
}

public static void main ( String [ ] args ) { double a = 0.0 ; double b = 1.0 ; double c = - 2 ; double x1 = 3.0 ; double y1 = 3.0 ; Pair < Double , Double > foot = findFoot ( a , b , c , x1 , y1 ) ; System . out . println ( foot . getKey ( ) + " ▁ " + foot . getValue ( ) ) ; }
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