%%HP: T(1)A(D)F(,);
«
"A=B=0 C=1 D=-2b² E=-2q"
1 DISP "F=q²-2pt" 2
DISP
"T(a;b) (y-b)²=2p(x-a)"
3 DISP
"x=a-p/2 F(a+p/2;b)"
4 DISP "" 5 DISP 3
FREEZE
»