Recent questions tagged determinant

+1 vote

1 answer

What is the value of the determinant |(0,2,0),(2,3,4),(4,5,6)|?

asked Apr 7, 2019 in JEE by kratos

+1 vote

1 answer

If |(x + 1, x - 1), (x - 3, x + 2)| = |(4, -1), (1, 3)|, then write the value of x.

asked Apr 6, 2019 in JEE by kratos

+2 votes

1 answer

If A is a square matrix and |A| = 2, then write the value of |AA'|, where A' is the transpose of matrix A.

asked Apr 6, 2019 in JEE by kratos

+3 votes

1 answer

|(sin(x + p), sin(x + q), sin(x + r)), (sin(y + p), sin(y + q), sin(y + r)), (sin(z + p), sin(z + q), sin(z + r))|

asked Apr 4, 2019 in JEE by kratos

+1 vote

1 answer

If A be a square matrix. Then A + A' will be a ............. (a) Symmetric matrix (b) Skew symmetric matrix (c) Null matrix (d) Unit matrix

asked Apr 3, 2019 in JEE by kratos

+2 votes

1 answer

Write the value of |(2,7,65)(3,8,75)(5,9,86)|

asked Apr 1, 2019 in Class 12 by kratos

+1 vote

1 answer

By using properties of determinants, prove the following: |(x+4,2x,2x),(2x,x+4,2x),(2x,2x,x+4)|=(5x+4)(4-x)^2

asked Apr 1, 2019 in Class 12 by kratos

+3 votes

1 answer

Prove the following, using properties of determinants: |(a+b+2c,a,b),(c,b+c+2a,b),(c,a,c+a+2b)|=2(a+b+c)^3

asked Mar 31, 2019 in Class 12 by kratos

+3 votes

1 answer

Solve system of linear equations, using matrix method, 2x + y + z = 1 x - 2y - z = 3/2 3y - 5z = 9

asked Mar 31, 2019 in Class 12 by kratos

+3 votes

1 answer

Using matrices, solve the following system of equations : x + 2y - 3z = - 4, 2x + 3y + 2z = 2, 3x - 3y - 4z = 11

asked Mar 31, 2019 in Class 12 by kratos

+1 vote

1 answer

If A is an invertible square matrix of order 3 and |A| = 5, then find the value of |adj A|.

asked Mar 31, 2019 in JEE by kratos

+2 votes

1 answer

If A = [(1,2,2),(2,1,2),(2,2,1)] then verify A^2 - 4A - 5I = 0.

asked Mar 31, 2019 in Class 12 by kratos

+1 vote

1 answer

Statement 1 : The determinant of a matrix Statement 2 : The determinant of a skew symmetric matrix of odd order is zero.

asked Mar 30, 2019 in JEE by kratos

+1 vote

1 answer

Using the proprties of determinants prove that: |(y+z z y), (z z+x x), (y x x+y)|=4xyz

asked Mar 29, 2019 in Class 12 by kratos

+2 votes

1 answer

For the function f(x) = (x^2 + bx + c) e^x and g(x) = (x^2 + bx + c) e^x + e^x (2x + b), w

asked Mar 29, 2019 in Class 12 by kratos

+1 vote

1 answer

Use product [(1,-1,2),(0,2,-3),(3,-2,4)][(-2,0,1),(9,2,-3),(6,1,-6)] to solve the system of equations :

asked Mar 29, 2019 in Class 12 by kratos

+1 vote

1 answer

The number of 2 × 2 matrices X satisfying the matrix equation X^2 = I (I is 2 × 2 unit matrix) is

asked Mar 27, 2019 in JEE by kratos

+1 vote

1 answer

If A = [(1 2 2), (2 1 -2), (a 2 b)] is a matrix satisfying the equation AA^T = 9I,

asked Mar 27, 2019 in JEE by kratos

+1 vote

1 answer

If P = [(1, 4), (2, 3)], then P^5 – 4P^4 – 7P^3 + 11P^2 is equal to (A) P + 10I (B) P + 5I

asked Mar 25, 2019 in Class 12 by kratos

+2 votes

1 answer

Let λ and α be real. The set of all values of x for which the system of linear equations

asked Mar 25, 2019 in JEE by kratos

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