Math Problem Statement

FOR THOSE MATRICES FIND b inverse 3A - B (A+B)TRANSPOSE A + C

For the given matrices, find B-inverse, 3A - B, (A + B) transpose, and A + C.

Solution

Let us solve the given matrix problems step by step. The matrices provided are:

A=(10321),B=(8413),C=(541320).A = \begin{pmatrix} 10 & 3 \\ -2 & 1 \end{pmatrix}, \quad B = \begin{pmatrix} 8 & 4 \\ -1 & -3 \end{pmatrix}, \quad C = \begin{pmatrix} 5 & -4 & 1 \\ 3 & -2 & 0 \end{pmatrix}.

We need to calculate the following:

  1. B1B^{-1} (the inverse of BB).
  2. 3AB3A - B.
  3. (A+B)T(A + B)^T (the transpose of A+BA + B).
  4. A+CA + C.

Let me calculate these one at a time. numpy as np

Define the matrices A, B, and C

A = np.array([[10, 3], [-2, 1]]) B = np.array([[8, 4], [-1, -3]]) C = np.array([[5, -4, 1], [3, -2, 0]])

1. Compute the inverse of B (B^-1)

B_inverse = np.linalg.inv(B)

2. Compute 3A - B

result_3A_minus_B = 3 * A - B

3. Compute (A + B)^T

result_A_plus_B_transpose = (A + B).T

Since A and C have incompatible dimensions for direct addition, we cannot compute A + C.

B_inverse, result_3A_minus_B, result_A_plus_B_transposeHere are the calculated results:

  1. The inverse of BB (B1B^{-1}) is: B1=(0.150.20.050.4)B^{-1} = \begin{pmatrix} 0.15 & 0.2 \\ -0.05 & -0.4 \end{pmatrix}

  2. 3AB3A - B is: 3AB=(22556)3A - B = \begin{pmatrix} 22 & 5 \\ -5 & 6 \end{pmatrix}

  3. The transpose of A+BA + B ((A+B)T(A + B)^T) is: (A+B)T=(18372)(A + B)^T = \begin{pmatrix} 18 & -3 \\ 7 & -2 \end{pmatrix}

Note: A+CA + C cannot be computed because the matrices AA (2x2) and CC (2x3) have incompatible dimensions for addition.

Let me know if you need further clarifications or additional details! Here are 5 follow-up questions to deepen your understanding:

  1. What are the conditions for a matrix to have an inverse?
  2. How is the transpose of a matrix defined?
  3. What happens if two matrices of incompatible dimensions are added or multiplied?
  4. Can you verify the inverse of BB by multiplying BB with B1B^{-1}?
  5. What are the practical applications of matrix operations like these?

Tip: Always check the dimensions of matrices before performing operations like addition or multiplication!

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Math Problem Analysis

Mathematical Concepts

Matrix Operations
Matrix Inversion
Matrix Transpose
Matrix Addition

Formulas

Matrix Inverse: A^-1 = (1/det(A)) * adj(A)
Matrix Transpose: A^T = (a_ij)^T = (a_ji)
Matrix Addition: C = A + B
Matrix Multiplication: C_ij = Σ A_ik * B_kj

Theorems

Invertible Matrix Theorem
Properties of Matrix Transpose

Suitable Grade Level

Undergraduate Level (or Advanced High School Level)