Expression 4: "y" equals left brace, "x" less than 0 : 0 , "x" less than "r" : negative StartFraction, "t" Over "r" squared , EndFraction left parenthesis, "x" minus "r" , right parenthesis squared plus "t" , "t" , right bracey=x<0:0,x<r:−tr2x−r2+t,t
4
Expression 5: "y" equals left brace, "x" less than 0 : 1 , "x" less than "r" : StartFraction, 1 minus "t" Over "r" squared , EndFraction left parenthesis, "x" minus "r" , right parenthesis squared plus "t" , "t" , right bracey=x<0:1,x<r:1−tr2x−r2+t,t
5
Expression 6: "y" equals left brace, "x" less than 0 : "c" , "x" greater than or equal to "n" : "t" , "c" less than "t" : StartFraction, "c" "r" squared plus 2 "r" "x" StartRoot, "t" ( "t" minus "c" ) , EndRoot minus "t" "x" squared Over "r" squared , EndFraction , StartFraction, "c" "r" squared minus 2 "r" "x" StartRoot, ( 1 minus "t" ) ( "c" minus "t" ) , EndRoot plus left parenthesis, 1 minus "t" , right parenthesis "x" squared Over "r" squared , EndFraction , right bracey=x<0:c,x≥n:t,c<t:cr2+2rxt(t−c)−tx2r2,cr2−2rx(1−t)(c−t)+1−tx2r2
6
Expression 7: "n" equals left brace, "c" less than or equal to "t" : StartFraction, "r" StartRoot, "t" ( "t" minus "c" ) , EndRoot Over "t" , EndFraction , StartFraction, "r" StartRoot, ( 1 minus "t" ) ( "c" minus "t" ) , EndRoot Over 1 minus "t" , EndFraction , right bracen=c≤t:rt(t−c)t,r(1−t)(c−t)1−t
