Anku posted an Question
March 09, 2021 • 18:56 pm 30 points
  • IIT JAM
  • Mathematics (MA)

How to solve pls once show steps..

how to solve pls once show steps..pls also tell formulae used

3 Answer(s) Answer Now
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  • comment-profile-img>
    Deepak singh 1 best-answer

    Refer

    cropped5934778284108884814.jpg
    cropped2444496693828367248.jpg
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    sir how m came i have encircled that pls once tell

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    also sir I had read taht this formula (for q1) is applicable for square Matrix but here in question it is not given that it is a square Matrix so can we use this formula in any type of matrix or we assume that in question it is talking about square Matrix

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    see , this common part is used in formula always .

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    And this formula is for every matrix. not only for n×n

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    feel free to ask again

  • comment-profile-img>
    Satpal singh best-answer

    answer of second question is option A. since all the entries of matrix is 3. then rank is 1. nullity= number of columns - rank. =n-1

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