Test if point inside a triange

運算式 12: "c" equals 0.9 0 6

運算式 13: "d" equals 0.1 5

運算式 14: "f" equals negative 0.0 3

運算式 15: "g" equals 0.6 6 7

運算式 16: left parenthesis, "a" , "b" , right parenthesis

運算式 17: left parenthesis, "c" , "d" , right parenthesis

運算式 18: left parenthesis, "f" , "g" , right parenthesis

運算式 19:

Positive if on the left, negative if on the right, zero if on the line

運算式 21: "f" Subscript, "p" , Baseline left parenthesis, "a" Subscript, "p" , Baseline , "b" Subscript, "p" , Baseline , "c" Subscript, "p" , Baseline , "d" Subscript, "p" , Baseline , right parenthesis equals left parenthesis, "j" minus "b" Subscript, "p" , Baseline , right parenthesis left parenthesis, "c" Subscript, "p" , Baseline minus "a" Subscript, "p" , Baseline , right parenthesis minus left parenthesis, "i" minus "a" Subscript, "p" , Baseline , right parenthesis left parenthesis, "d" Subscript, "p" , Baseline minus "b" Subscript, "p" , Baseline , right parenthesis

運算式 22: left parenthesis, "i" , "j" , right parenthesis

運算式 23: "i" equals 0.2 6 6

運算式 24: "j" equals 0.1 5 7

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