Expression 12: left brace, left brace, "p" Subscript, 0 , Baseline . "y" greater than or equal to 0 , right brace "R" equals 1 , 0 , right bracep0.y≥0R=1,0
equals=
00
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Function to illustrate
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Expression 14: "h" left parenthesis, "t" , right parenthesis equals left brace, left brace, "p" Subscript, 0 , Baseline . "y" greater than or equal to 0 , right brace "R" equals 1 : "f" left parenthesis, "t" , right parenthesis , "g" left parenthesis, "t" , right parenthesis , right braceht=p0.y≥0R=1:ft,gt
14
Functions
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15
When above y=0
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Expression 17: "f" left parenthesis, "t" , right parenthesis equals negative left parenthesis, "t" minus "p" Subscript, 0 , Baseline . "x" , right parenthesis squared plus "p" Subscript, 0 , Baseline . "y"ft=−t−p0.x2+p0.y
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When below
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Expression 19: "g" left parenthesis, "t" , right parenthesis equals negative left parenthesis, "t" minus "p" Subscript, 0 , Baseline . "x" , right parenthesis plus "p" Subscript, 0 , Baseline . "y"gt=−t−p0.x+p0.y