表达式3: "I" Subscript, "n" "t" "e" "r" "p" "o" "l" "a" "t" "e" , Baseline left parenthesis, "a" , "b" , "I" , right parenthesis equals "a" times left parenthesis, 1 minus "I" , right parenthesis plus "b" times "I"Interpolatea,b,I=a·1−I+b·I
3
表达式4: "I" Subscript, "n" "t" "e" "r" "p" "o" "l" "a" "t" "e" , Baseline left parenthesis, left bracket, negative 1 , 1 , right bracket StartRoot, 25 minus "x" squared , EndRoot plus 5 , sin left parenthesis, "x" , right parenthesis , "T" , right parenthesisInterpolate−1,125−x2+5,sinx,T
