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If A =  is a matrix satisfying the equation AAT = 9I, where I is 3 × 3 identity matrix, then the ordered pair (a, b) is equal to
  • a)
    (2, –1)
  • b)
    (–2, 1)
  • c)
    (2, 1)
  • d)
    (–2, –1)
Correct answer is option 'D'. Can you explain this answer?
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If A =is a matrix satisfying the equation AAT = 9I, where I is 3 &time...
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If A =is a matrix satisfying the equation AAT = 9I, where I is 3 &time...

a + 4+2b = 0
2a +2- 2b = 0
a + 1-b =0
2a -2b= -2
a + 2b= -4
-----------------
3a =-6
a =-2
-2+1 - b = 0
b = -1
a = -2
(-2, -1)
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If A =is a matrix satisfying the equation AAT = 9I, where I is 3 × 3 identity matrix, then the ordered pair (a, b) is equal toa)(2, –1)b)(–2, 1)c)(2, 1)d)(–2, –1)Correct answer is option 'D'. Can you explain this answer?
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If A =is a matrix satisfying the equation AAT = 9I, where I is 3 × 3 identity matrix, then the ordered pair (a, b) is equal toa)(2, –1)b)(–2, 1)c)(2, 1)d)(–2, –1)Correct answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about If A =is a matrix satisfying the equation AAT = 9I, where I is 3 × 3 identity matrix, then the ordered pair (a, b) is equal toa)(2, –1)b)(–2, 1)c)(2, 1)d)(–2, –1)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If A =is a matrix satisfying the equation AAT = 9I, where I is 3 × 3 identity matrix, then the ordered pair (a, b) is equal toa)(2, –1)b)(–2, 1)c)(2, 1)d)(–2, –1)Correct answer is option 'D'. Can you explain this answer?.
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