Reptiles Archives - Page 2 of 2 - mcqoptions.com

Sign Up

Sign In

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

You must login to ask a question.

You must login to add post.

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Search

Ask A Question

Yasmin Giaan Vyas

Asked: 3 years agoIn: Matrices

The inverse of the matrix \(\rm \begin{bmatrix} 2+3i & -i\\ i & 2-3i \end{bmatrix}\)is
1. \( \frac{1}{12}\begin{bmatrix} 2-3i & i\\ -i & -2+3i \end{bmatrix}\)
2. \( \frac{1}{12}\begin{bmatrix} 2-3i & i\\ -i & 2+3i \end{bmatrix}\)
3. \( \frac{1}{12}\begin{bmatrix} 2+3i & i\\ -i & 2-3i \end{bmatrix}\)
4. \( \frac{1}{12}\begin{bmatrix} 2-3i & -i\\ i & 2+3i \end{bmatrix}\)

Ruchi Brahmbhatt

Asked: 3 years agoIn: Matrices

Consider the following statements in respect of a square matrix A and its transpose A^T :
1. A + A^T is always symmetric.
2. A – A^T is always anti-symmetric.
Which of the statements given above is / are correct?

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2

Labeen Chandra Varma

Asked: 3 years agoIn: Matrices

If the A = \(\begin{bmatrix} -1& 3 \\ 4 & -2 \end{bmatrix}\) satisfies equation A² + 3A – 10I = 0, find A^-1.
1. \({1\over10}\begin{bmatrix} -2& -3 \\ 4 & 1 \end{bmatrix}\)
2. \({1\over10}\begin{bmatrix} -2& 3 \\ 4 & -1 \end{bmatrix}\)
3. \({1\over10}\begin{bmatrix} 2& 3 \\ 4 & 1 \end{bmatrix}\)
4. \({1\over10}\begin{bmatrix} 2& -3 \\ -4 & 1 \end{bmatrix}\)

Venkat Sachar

Asked: 3 years agoIn: Matrices

Find the inverse of the matrix \(\begin{bmatrix} 1& -3 \\ 4& 2 \end{bmatrix}\)
1. \({1\over14}\begin{bmatrix} 2& -3 \\ 4& -1 \end{bmatrix}\)
2. \({1\over14}\begin{bmatrix} 2& 3 \\ -4& 1 \end{bmatrix}\)
3. \({1\over14}\begin{bmatrix} 2& -3 \\ -4& 1 \end{bmatrix}\)
4. \({1\over14}\begin{bmatrix} 2& 3 \\ 4& 1 \end{bmatrix}\)