6-26  trapz֡
⣺Enterȷϡ
>> X=[1 2 3 4 5 6 7 8 9]
X =
     1     2     3     4     5     6     7     8     9
>> Z1=trapz(X)
Z1 =
    40
>> Y = [0 1 2;3 4 5;6 7 8]
Y =
     0     1     2
     3     4     5
     6     7     8
>>  trapz(Y,1)
ans =
     6     8    10
>>  trapz(Y,2)
ans =
     2
     8
    14
>>  x=[1 2 3]
x =
     1     2     3
>>  trapz(x,Y)
ans =
     6     8    10
>>
