Home
Class 12
MATHS
If A satisfies the equation x^3-5x^2+4x+...

If `A` satisfies the equation `x^3-5x^2+4x+lambda=0` , then `A^(-1)` exists if `lambda!=1` (b) `lambda!=2` (c) `lambda!=-1` (d) `lambda!=0`

Text Solution

Verified by Experts

As we given that A satisfies the given equation,
Therefore,
`A^3−5A^2+4A+lambda=0`
`A ^(−1)` exits if `k!=0` since if` k=0` then the above equation gives `A=0` and in that case `A^(−1)` wont exist.
Hence correct option is (d).
Promotional Banner

Topper's Solved these Questions

  • ADJOINTS AND INVERSE OF MATRIX

    RD SHARMA|Exercise QUESTION|1 Videos
  • ALGEBRA OF MATRICES

    RD SHARMA|Exercise Solved Examples And Exercises|410 Videos

Similar Questions

Explore conceptually related problems

Let A=[[x+lambda,x,x] , [x,x+lambda,x] ,[x,x,x+lambda]] then A^(-1) exists if (A) x!=0 (B) lambda!=0 (C) 3x+1!=0 , lambda!=0 (D) x!=0 , lambda!=0

The number of real roots of the equation 4x^(3)-x^(2)+lambda^(2)x-mu=0 , mu in R, lambda > 1 is

Let a,b,c be the sides of a triangle. No two of them are equal and lambda in R If the roots of the equation x^2+2(a+b+c)x+3lambda(ab+bc+ca)=0 are real, then (a) lambda 5/3 (c) lambda in (1/5,5/3) (d) lambda in (4/3,5/3)

If x=-1 and x=(1)/(5) are solutions of the equations x^(2)+kx+lambda=0. Find the value of k and lambda

If xy-log_(e)y=1 satisfies the equation x(yy_(2)+y_(1)^(2))-y_(2)+lambda yy_(1)=0, then lambda=-3 (b) 1 (c) 3 (d) none of these

The number of solutions of the equation x^(3)+2x^(2)+5x+2cos x=0 in [0,2 pi] is lambda then (lambda)/(4)=

The equation x^(2)-6x+8+lambda(x^(2)-4x+3)=0,AA lambda in R-{-1} has

If alpha,beta be the roots of the equation 4x^(2)-16x+lambda=0 where lambda in R such that 1

Roots of the equation (x^(2)-4x+3)+lambda(x^(2)-6x+8)=0lambda in R will be

A solutions set of the equations x+2y+z=1,x+3y+4z=k,x+5y+10z= k^2 (5 lambda-1,1-3 lambda,lambda) (1+5 lambda,-3 lambda,lambda) (1+6 lambda,-2 lambda,lambda) (1-6"lambda,lambda,lambda)