<p>:Disp “POINT 1:”
:Prompt A,B
:Disp “POINT 2:”
:Prompt C,D
:Disp “POINT 3:”
:Prompt E,F
:ClrList L1,L2,L3,L4,L5
:{A,C,E}->L1
:{B,D,F}->L2
:L1^2->L3
:L2^2->L4
:{1,1,1}->L5
:List>matr(L1,L2,L5,(-L3-L4),[A])
:rref([A])->[A]
:Matr>list([A],L1,L2,L3,L4)
:-L4(1)/2->H
:-L4(2)/2->K
:-L4(3)+L4(1)^2/4+L4(2)^2/4->R
:Disp “H=”,H
:Disp “K=”,K
:Disp “R^2=”, R</p>
<p>this app is to find the equation of a circle given 3 points on the circle. as you guys all know, its a lengthy process. for some reason this app wont work. not quite sure why.</p>
<p>all of the smiley faces are just a colon followed by a D.</p>