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Vijay posted an Question
March 26, 2021 • 16:48 pm 30 points
  • IIT JAM
  • Mathematics (MA)

Please send the solution to the problem given in the attachment.

please send the solution to the problem given in the attachment.

2 Answer(s) Answer Now
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  • comment-profile-img>
    Deepak singh 1 Best Answer

    Refer attached , answer is 1

    cropped9205960446757280058.jpg
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    doubt

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    because , by row transformation , we can vanish row 2 and 3 with help of row 1 always .

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    mistake

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    ohh.. yes its mistake . There should be 3×1 not 1×3 . But argument will be same . Don't worry.

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    doubt

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    thanks dear for showing mistake , you are correct . Here should be RankB<=1 not 3 . In hurry , I have made lot of mistake .

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    no issue, even the titans make mistakes.

  • comment-profile-img>
    Piyush pachauri

    Ans is 1. if both are non zero. Use Rank product rule

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    what is the rank product rule? if possible for you then do it on paper 📝 !

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    I have updated the picture

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    why can't the rank of A &B be greater than 1?

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    This is really basic , Since it is from R3 to R so rank cannot be greater than 1.

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