Home
Class 12
MATHS
If A=[(5a, -b),(3,2)] and A adj A=A A^T,...

If `A=[(5a, -b),(3,2)]` and A adj `A=A A^T`, then `5a+b` is equal to: (A) `-1` (B) 5 (C) 4 (D) 13

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • MATHEMATICAL REASONING

    JEE MAINS PREVIOUS YEAR|Exercise All Questions|6 Videos

  • PARABOLA

    JEE MAINS PREVIOUS YEAR|Exercise All Questions|9 Videos

Similar Questions

Explore conceptually related problems

If A=|{:(,5a,-b),(,3,2):}| and A adj A=A A^(T) , then 5a+b is equal to

If a : b = 5 : 2 , then ( a - b )/b is equal to : ( A ) 7/2 ( B ) 3/5 ( C ) 3/2 ( D ) 2/3

9+|-4| is equal to: 5 (b) -5 (c) 13 (d) -13

If a : b = 2: 5 , then ( 3a+ 4b) : (5a +6b) is equal to

5 tan^2 A -5sec^2 A+1 is equal to (a) 6 (b) -5 (c) 1 (d) -4

If a = - 2 , b = -1 , then ( a^b - b^a ) is equal to ( a ) -1 ( b ) 0.5 ( c ) -2 ( d ) -1.5