The number of values of k for which the linear equations4x+ky+2z=0kx+4y+z=02x+2y+z=0posses a non-zero solution is :
Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
If A=[ 253−2 ], write A−1 in terms of A.
Find the inverse of the matrices , if it exists.⎣⎡1−32305−2−50⎦⎤
If AB=KI where K∈R then A−1= _____
If A= and b=, then find (AB)−1.
If A=⎣⎡122212221⎦⎤, find A−1 and prove that A2−4A−5I=0.
Consider the matrix, A=⎣⎡11212−11−33⎦⎤ then show that A3−6A2+5A+11I3=0. Hence, find A−1.