นิพจน์ 8: left parenthesis, left parenthesis, 1 minus "t" , right parenthesis "a" Subscript, 1 , Baseline plus "t" "c" Subscript, 1 , Baseline , left parenthesis, 1 minus "t" , right parenthesis "a" Subscript, 2 , Baseline plus "t" "c" Subscript, 2 , Baseline , right parenthesis1−ta1+tc1,1−ta2+tc2
โดเมน t ค่าต่ำสุด: 00
less than or equal to "t" less than or equal to≤t≤