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MLF · Quadratic forms & definiteness

4 questions · 11 marks · 3 papers

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Machine Learning Foundations

Quadratic forms & definiteness

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
MSQ: One or more options correct. Select all to score.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Quiz 2 · 3 Aug 2025 (AN)Quiz 2

Q1MCQ2 Marks·Choose one option
Asked 4 times Key ↓
1. AQ is positive definite.
2. BQ is positive semi-definite.
3. CQ is negative definite.
4. DQ is negative semi-definite.
5. ENone of these
Q2MCQ3 Marks·Choose one option
Asked 4 times Key ↓
1. AA is positive definite.
2. BA is positive semi-definite.
3. CA is negative definite.
4. DA is negative semi-definite.

End Term · 22 Dec 2024 (FN)End Term

Q3MSQ3 Marks·Choose all correct options
Asked 4 times Key ↓
1. AA is a positive definite matrix.
2. BA is singular matrix.
3. CA is a symmetric matrix.
4. DA is a negative definite matrix.

End Term · 22 Dec 2024 (AN)End Term

Q4MSQ3 Marks·Choose all correct options
Asked 4 times Key ↓
1. AA is a positive definite matrix.
2. BA is not a singular matrix.
3. CA is not a symmetric matrix.
4. DA is a negative definite matrix.

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1E

Q2A

Q3A, C

Q4A, B

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