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Which of the following matrices are singular or non singular? [357-214325] - Mathematics and Statistics

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प्रश्न

Which of the following matrices are singular or non singular?

`[(3, 5, 7),(-2, 1, 4),(3, 2, 5)]`

बेरीज
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उत्तर

Let A = `[(3, 5, 7),(-2, 1, 4),(3, 2, 5)]`

∴ |A| = `|(3, 5, 7),(-2, 1, 4),(3, 2, 5)|`

= 3(5 – 8) – 5(–10 – 12) + 7(– 4 – 3)

= 3(– 3) – 5(–22) + 7(–7)
= – 9 + 110 – 49
= 52 ≠ 0
∴  A is a non-singular matrix.

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Determinant of a Matrix
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Matrices - Exercise 2.1 [पृष्ठ ४०]

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