Solution for the question - if a = [[0,1],[1,0]] and b = [[0,-i],[i,0]] , then - none of theseab = ba

Maths-

General

Easy

Question

If A = $open square brackets table row 0 1 row 1 0 end table close square brackets$ and B = $open square brackets table row 0 cell negative i end cell row i 0 end table close square brackets$ , then -

AB = BA
AB = B²
AB = – BA
None of these

The correct answer is: AB = – BA

To find the correct statement from the given options.
Given, A = $open square brackets table row 0 1 row 1 0 end table close square brackets$ and B = $open square brackets table row 0 cell negative i end cell row i 0 end table close square brackets$ .
AB = $open square brackets table row 0 cell negative i end cell row i 0 end table close square brackets$ x $open square brackets table row 0 1 row 1 0 end table close square brackets$ = $open square brackets table row cell negative i end cell 0 row 0 i end table close square brackets$
BA = $open square brackets table row 0 1 row 1 0 end table close square brackets$ x $open square brackets table row 0 cell negative i end cell row i 0 end table close square brackets$ = $open square brackets table row i 0 row 0 cell negative i end cell end table close square brackets$ = -AB

Therefore, AB = -BA.

$open square brackets table row 1 cell negative tan invisible function application alpha divided by 2 end cell row cell tan invisible function application alpha divided by 2 end cell 1 end table close square brackets$ $open square brackets table row cell tan invisible function application alpha divided by 2 end cell 1 row 1 0 end table close square brackets$ equals-

Maths-General

General

Maths-

Statement - I For any real value of $theta not equal to left parenthesis 2 n plus 1 right parenthesis pi$ or $left parenthesis 2 straight n plus 1 right parenthesis pi divided by 2 comma straight n element of straight I$ the value of the expression $straight y equals fraction numerator cos squared begin display style space end style theta minus 1 over denominator cos squared begin display style space end style theta plus cos space theta end fraction text is end text straight y less or equal than$ 0 or y≥2 (either less than or equal to zero or greater than or equal to two)
Statement - II $sec space theta element of left parenthesis negative straight infinity comma negative 1 right square bracket union left square bracket 1 comma straight infinity right parenthesis$ for all real values of $theta$ .

In this question, we have to find the statements are the correct or not and statement 2 is correct explanation or not, is same as assertion and reason

Statement - I For any real value of $theta not equal to left parenthesis 2 n plus 1 right parenthesis pi$ or $left parenthesis 2 straight n plus 1 right parenthesis pi divided by 2 comma straight n element of straight I$ the value of the expression $straight y equals fraction numerator cos squared begin display style space end style theta minus 1 over denominator cos squared begin display style space end style theta plus cos space theta end fraction text is end text straight y less or equal than$ 0 or y≥2 (either less than or equal to zero or greater than or equal to two)
Statement - II $sec space theta element of left parenthesis negative straight infinity comma negative 1 right square bracket union left square bracket 1 comma straight infinity right parenthesis$ for all real values of $theta$ .

Maths-General

In this question, we have to find the statements are the correct or not and statement 2 is correct explanation or not, is same as assertion and reason

General

Maths-

If A = $open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets$ , then A² equals-

Maths-General

General

Maths-

The root of the equation [x 1 2] $open square brackets table attributes columnalign left left left columnspacing 1em end attributes row cell 0 1 1 end cell row cell 1 0 1 end cell row cell 1 1 0 end cell end table close square brackets$ $open square brackets table row x row cell negative 1 end cell row 1 end table close square brackets$ = 0 is-

Maths-General

General

Maths-

If A = $open square brackets table row 3 1 row 7 5 end table close square brackets$ and A² + kI = 8A, then k equals

Maths-General

General

Maths-

If A and B are matrices of order m × n and n × n respectively, then which of the following are defined-

Maths-General

General

chemistry-

The multiplicative inverse of A = $open square brackets table row cell cos invisible function application theta end cell cell negative sin invisible function application theta end cell row cell sin invisible function application theta end cell cell cos invisible function application theta end cell end table close square brackets$ is

maths-General

General

chemistry-

(A) and (B) are:

chemistry-General

General

maths-

A = $open square brackets table row 1 2 2 row 2 1 2 row 2 2 1 end table close square brackets$ , then A³ – 4A² – 6A is equal to -

maths-General

General

maths-

Inverse of the matrix $open square brackets table row 3 cell – 2 end cell cell – 1 end cell row cell – 4 end cell 1 cell – 1 end cell row 2 0 1 end table close square brackets$ is

maths-General

General

maths-

If A = $open square brackets table row 2 cell – 1 end cell row cell – 1 end cell 2 end table close square brackets$ and A² – 4A – n I = 0, then n is equal to

maths-General

General

maths-

The value of x for which the matrix product $open square brackets table attributes columnalign center center center columnspacing 1em end attributes row 2 0 7 row 0 1 0 row 1 cell negative 2 end cell 1 end table close square brackets$ $open square brackets table row cell – x end cell cell 14 x end cell cell 7 x end cell row 0 1 0 row x cell – 4 x end cell cell – 2 x end cell end table close square brackets$ equal an identity matrix is :

maths-General

Have a query? Ask a Tutor!!

Can’t find what you’re looking for?

If A = $open square brackets table row 0 1 row 1 0 end table close square brackets$ and B = $open square brackets table row 0 cell negative i end cell row i 0 end table close square brackets$ , then -

AB = BA
AB = B²
AB = – BA
None of these

The correct answer is: AB = – BA

Related Questions to study

If A = $open square brackets table row 3 1 row 7 5 end table close square brackets$ and A² + kI = 8A, then k equals

If A = $open square brackets table row 3 1 row 7 5 end table close square brackets$ and A² + kI = 8A, then k equals

If A and B are matrices of order m × n and n × n respectively, then which of the following are defined-

If A and B are matrices of order m × n and n × n respectively, then which of the following are defined-

the products (A) and (B) are:

the products (A) and (B) are:

A matrix A = (aij) m x n is said to be a square matrix if-

A matrix A = (aij) m x n is said to be a square matrix if-

For any square matrix A = [aij], aij = 0, when i $not equal to$ j, then A is-

For any square matrix A = [aij], aij = 0, when i $not equal to$ j, then A is-

(A) and (B) are:

(A) and (B) are:

A = $open square brackets table row 1 2 2 row 2 1 2 row 2 2 1 end table close square brackets$ , then A³ – 4A² – 6A is equal to -

A = $open square brackets table row 1 2 2 row 2 1 2 row 2 2 1 end table close square brackets$ , then A³ – 4A² – 6A is equal to -

Inverse of the matrix $open square brackets table row 3 cell – 2 end cell cell – 1 end cell row cell – 4 end cell 1 cell – 1 end cell row 2 0 1 end table close square brackets$ is

Inverse of the matrix $open square brackets table row 3 cell – 2 end cell cell – 1 end cell row cell – 4 end cell 1 cell – 1 end cell row 2 0 1 end table close square brackets$ is

If A = $open square brackets table row 2 cell – 1 end cell row cell – 1 end cell 2 end table close square brackets$ and A² – 4A – n I = 0, then n is equal to

If A = $open square brackets table row 2 cell – 1 end cell row cell – 1 end cell 2 end table close square brackets$ and A² – 4A – n I = 0, then n is equal to

With Turito Academy.

With Turito Foundation.

Get an Expert Advice From Turito.

Turito Academy

With Turito Academy.

Test Prep

With Turito Foundation.

Follow Us at

Support

Download App

Quick Links

Have a query? Ask a Tutor!!

Can’t find what you’re looking for?

If A = and B = , then -

AB = BA AB = B2 AB = – BA None of these

The correct answer is: AB = – BA

To find the correct statement from the given options.Given, A = and B =.AB = x = BA = x = = -AB

Related Questions to study

equals-

equals-

Statement - I For any real value of or the value of the expression 0 or y≥2 (either less than or equal to zero or greater than or equal to two)Statement - II for all real values of .

Statement - I For any real value of or the value of the expression 0 or y≥2 (either less than or equal to zero or greater than or equal to two)Statement - II for all real values of .

If A =, then A2 equals-

If A =, then A2 equals-

The root of the equation [x 1 2] = 0 is-

The root of the equation [x 1 2] = 0 is-

If A = and A2 + kI = 8A, then k equals

If A = and A2 + kI = 8A, then k equals

If A and B are matrices of order m × n and n × n respectively, then which of the following are defined-

If A and B are matrices of order m × n and n × n respectively, then which of the following are defined-

the products (A) and (B) are:

the products (A) and (B) are:

A matrix A = (aij) m x n is said to be a square matrix if-

A matrix A = (aij) m x n is said to be a square matrix if-

For any square matrix A = [aij], aij = 0, when i j, then A is-

For any square matrix A = [aij], aij = 0, when i j, then A is-

The multiplicative inverse of A =is

The multiplicative inverse of A =is

(A) and (B) are:

(A) and (B) are:

A = , then A3 – 4A2 – 6A is equal to -

A = , then A3 – 4A2 – 6A is equal to -

Inverse of the matrix is

Inverse of the matrix is

If A = and A2 – 4A – n I = 0, then n is equal to

If A = and A2 – 4A – n I = 0, then n is equal to

The value of x for which the matrix product equal an identity matrix is :

The value of x for which the matrix product equal an identity matrix is :

With Turito Academy.

With Turito Foundation.

Get an Expert Advice From Turito.

Turito Academy

With Turito Academy.

Test Prep

With Turito Foundation.

If A = $open square brackets table row 0 1 row 1 0 end table close square brackets$ and B = $open square brackets table row 0 cell negative i end cell row i 0 end table close square brackets$ , then -

AB = BA
AB = B²
AB = – BA
None of these

If A = $open square brackets table row 3 1 row 7 5 end table close square brackets$ and A² + kI = 8A, then k equals

If A = $open square brackets table row 3 1 row 7 5 end table close square brackets$ and A² + kI = 8A, then k equals

For any square matrix A = [aij], aij = 0, when i $not equal to$ j, then A is-

For any square matrix A = [aij], aij = 0, when i $not equal to$ j, then A is-

A = $open square brackets table row 1 2 2 row 2 1 2 row 2 2 1 end table close square brackets$ , then A³ – 4A² – 6A is equal to -

A = $open square brackets table row 1 2 2 row 2 1 2 row 2 2 1 end table close square brackets$ , then A³ – 4A² – 6A is equal to -

Inverse of the matrix $open square brackets table row 3 cell – 2 end cell cell – 1 end cell row cell – 4 end cell 1 cell – 1 end cell row 2 0 1 end table close square brackets$ is

Inverse of the matrix $open square brackets table row 3 cell – 2 end cell cell – 1 end cell row cell – 4 end cell 1 cell – 1 end cell row 2 0 1 end table close square brackets$ is

If A = $open square brackets table row 2 cell – 1 end cell row cell – 1 end cell 2 end table close square brackets$ and A² – 4A – n I = 0, then n is equal to

If A = $open square brackets table row 2 cell – 1 end cell row cell – 1 end cell 2 end table close square brackets$ and A² – 4A – n I = 0, then n is equal to