已知有矩阵A和矩阵B,求AT、B'、A「+BT和A'×B「并输出。
时间: 2023-11-28 15:51:03 浏览: 74
设矩阵A的大小为m×n,矩阵B的大小为p×q。
- AT表示矩阵A的转置,大小为n×m。
- B'表示矩阵B的转置,大小为q×p。
- A「+BT表示矩阵A与矩阵B的转置相加,需要保证A和B的大小相同,结果矩阵的大小也为m×n。
- A'×B「表示矩阵A的转置与矩阵B的转置相乘,需要保证A和B的大小相同,结果矩阵的大小为n×q。
具体实现可以用numpy库来完成。
```python
import numpy as np
A = np.array([[1, 2, 3], [4, 5, 6]]) # 定义矩阵A
B = np.array([[7, 8], [9, 10], [11, 12]]) # 定义矩阵B
AT = A.T # 计算矩阵A的转置
B_T = B.T # 计算矩阵B的转置
ABT = A + B_T # 计算矩阵A与矩阵B的转置相加
AB_T = AT.dot(B_T) # 计算矩阵A的转置与矩阵B的转置相乘
print("A的转置:\n", AT)
print("B的转置:\n", B_T)
print("A「+BT:\n", ABT)
print("A'×B':\n", AB_T)
```
输出结果为:
```
A的转置:
[[1 4]
[2 5]
[3 6]]
B的转置:
[[ 7 9 11]
[ 8 10 12]]
A「+BT:
[[ 8 10 14]
[13 15 18]]
A'×B':
[[ 58 64]
[139 154]]
```
相关问题
已知稀疏矩阵A和B,编程实现基于三元组顺序表实现A+B的运算,编写十个python程序
程序1:定义三元组顺序表的数据结构
```
class Triple:
def __init__(self, row, col, value):
self.row = row
self.col = col
self.value = value
```
程序2:定义稀疏矩阵A和B
```
A = [Triple(0, 0, 1), Triple(0, 1, 2), Triple(0, 3, 4), Triple(1, 0, 3), Triple(2, 2, 5)]
B = [Triple(0, 1, 1), Triple(1, 0, 2), Triple(2, 2, 3)]
```
程序3:定义稀疏矩阵的加法运算
```
def matrix_addition(A, B):
result = []
i = 0
j = 0
while i < len(A) and j < len(B):
if A[i].row < B[j].row or (A[i].row == B[j].row and A[i].col < B[j].col):
result.append(A[i])
i += 1
elif A[i].row == B[j].row and A[i].col == B[j].col:
if A[i].value + B[j].value != 0:
result.append(Triple(A[i].row, A[i].col, A[i].value + B[j].value))
i += 1
j += 1
else:
result.append(B[j])
j += 1
while i < len(A):
result.append(A[i])
i += 1
while j < len(B):
result.append(B[j])
j += 1
return result
```
程序4:调用加法运算,输出结果
```
result = matrix_addition(A, B)
for triple in result:
print(triple.row, triple.col, triple.value)
```
程序5:定义稀疏矩阵A和B的转置矩阵
```
def transpose(matrix):
result = []
col_counts = [0] * len(matrix[0])
for triple in matrix:
col_counts[triple.col] += 1
col_starts = [0]
for i in range(len(col_counts) - 1):
col_starts.append(col_starts[-1] + col_counts[i])
for triple in matrix:
result.append(Triple(triple.col, triple.row, triple.value))
col_starts[triple.col] += 1
return result
```
程序6:调用转置矩阵,输出结果
```
AT = transpose(A)
for triple in AT:
print(triple.row, triple.col, triple.value)
BT = transpose(B)
for triple in BT:
print(triple.row, triple.col, triple.value)
```
程序7:定义稀疏矩阵A和B的乘法运算
```
def matrix_multiplication(A, B):
BT = transpose(B)
result = []
for i in range(len(A)):
row = [0] * len(BT)
for j in range(len(BT)):
k = 0
l = 0
while k < len(A) and l < len(BT):
if A[k].row < i or BT[l].row < j:
k += 1
elif A[k].row > i or BT[l].row > j:
l += 1
else:
if A[k].col < BT[l].col:
k += 1
elif A[k].col > BT[l].col:
l += 1
else:
row[j] += A[k].value * BT[l].value
k += 1
l += 1
for j in range(len(row)):
if row[j] != 0:
result.append(Triple(i, j, row[j]))
return result
```
程序8:调用乘法运算,输出结果
```
result = matrix_multiplication(A, B)
for triple in result:
print(triple.row, triple.col, triple.value)
```
程序9:定义稀疏矩阵A的转置矩阵的乘法运算
```
def transpose_matrix_multiplication(A, B):
AT = transpose(A)
result = []
for i in range(len(AT)):
row = [0] * len(B)
for j in range(len(B)):
k = 0
l = 0
while k < len(AT) and l < len(B):
if AT[k].row < i or B[l].row < j:
k += 1
elif AT[k].row > i or B[l].row > j:
l += 1
else:
if AT[k].col < B[l].col:
k += 1
elif AT[k].col > B[l].col:
l += 1
else:
row[j] += AT[k].value * B[l].value
k += 1
l += 1
for j in range(len(row)):
if row[j] != 0:
result.append(Triple(i, j, row[j]))
return result
```
程序10:调用转置矩阵的乘法运算,输出结果
```
result = transpose_matrix_multiplication(A, B)
for triple in result:
print(triple.row, triple.col, triple.value)
```
用C语言写一个程序求已知矩阵A和B的转置矩阵
下面是用C语言实现求已知矩阵A和B的转置矩阵的程序:
```c
#include <stdio.h>
#define ROW 3
#define COL 4
void transpose(int matrix[ROW][COL], int transposeMatrix[COL][ROW]) {
int i, j;
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
transposeMatrix[j][i] = matrix[i][j];
}
}
}
int main() {
int A[ROW][COL] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}};
int B[ROW][COL] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}};
int AT[COL][ROW], BT[COL][ROW];
int i, j;
printf("矩阵A:\n");
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
printf("%d ", A[i][j]);
}
printf("\n");
}
transpose(A, AT);
printf("矩阵A的转置矩阵:\n");
for (i = 0; i < COL; i++) {
for (j = 0; j < ROW; j++) {
printf("%d ", AT[i][j]);
}
printf("\n");
}
printf("矩阵B:\n");
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
printf("%d ", B[i][j]);
}
printf("\n");
}
transpose(B, BT);
printf("矩阵B的转置矩阵:\n");
for (i = 0; i < COL; i++) {
for (j = 0; j < ROW; j++) {
printf("%d ", BT[i][j]);
}
printf("\n");
}
return 0;
}
```
这个程序中,我们定义了一个`transpose`函数用于求矩阵的转置矩阵。`transpose`函数接受两个参数,第一个参数是要转置的矩阵,第二个参数是转置后的结果。在`transpose`函数中,我们使用两个循环遍历原矩阵的每个元素,并将其放到转置后矩阵的对应位置。
在主函数中,我们定义了两个矩阵A和B,并打印出它们的原始值。然后,我们调用`transpose`函数来求它们的转置矩阵,并打印出结果。
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