表达式4: "L" left parenthesis, "x" , "y" , "t" , right parenthesis equals left parenthesis, "y" minus "x" , right parenthesis "t" plus "x"Lx,y,t=y−xt+x
4
表达式5: "C" left parenthesis, "x" , "y" , right parenthesis equals "L" left parenthesis, "L" left parenthesis, "p" left bracket, 1 , right bracket , "p" left bracket, 2 , right bracket , "x" , right parenthesis , "L" left parenthesis, "p" left bracket, 2 , right bracket , "p" left bracket, 3 , right bracket , "x" , right parenthesis , "y" , right parenthesisCx,y=LLp1,p2,x,Lp2,p3,x,y
5
表达式6: "C" left parenthesis, StartFraction, left bracket, 0... "n" , right bracket Over "n" , EndFraction , "t" , right parenthesisC0...nn,t
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
6
表达式7: "C" left parenthesis, "t" , "t" , right parenthesisCt,t
定义域t最小值： negative 1−1
less than or equal to "t" less than or equal to≤t≤
