Lecturer Mathematics Past Paper 19-03-2021 by SPSC - MCQs

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Lecturer Mathematics Past Paper 19-03-2021 by SPSC

Q31: A^T= A^-1, where A is a real matrix, then A is?

Normal

Orthogonal

Symmetric

None of these

Explanation

A matrix $A$ is orthogonal if $A^T = A^{-1}$ , meaning its transpose is equal to its inverse.

This property ensures that the matrix preserves length and angles under transformation.

Q32: Crank Nicholson method is a technique to solve numerically which of the following type of equations?

Nonlinear partial differential equations

System of equations

Nonlinear equations

None of these

Q33: To the dismay of the student body the class representative was ______ berated by the principal at a school assembly.

Personally

Effectively

Ignominiously

None of these