Have a query? Ask a Tutor!!

Access to best educators and exclusive paper discussions

Offsite Campus Turito Championship

Can’t find what you’re looking for?

Our tutors are from top schools around the world, and they are waiting for you 24/7, anytime, anywhere.

Homework- One to One Solutions
Understand concepts to solve better
Get your doubts solved instantly

Mathematics

Grade9

Easy

Question

Multiply: $M equals open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets comma space N equals open square brackets table attributes columnalign left end attributes row a row b end table close square brackets$

$[- a + 2 b]$
$[a - 2 b]$
$[- a - 2 b]$
$[a + 2 b]$

hint Hint:

We can understand the general process of matrix multiplication by the technique, "First rows are multiplied by columns (element by element) and then the rows are filled up. Multiplying matrices can be performed using the following steps:
Step 1: Make sure that the number of columns in the 1^st matrix equals the number of rows in the 2^nd matrix (compatibility of matrices).
Step 2: Multiply the elements of i^th row of the first matrix by the elements of j^thcolumn in the second matrix and add the products. This would the element that is in the i^th row and j^th column of the resultant matrix.
Step 3: Place the added products in the respective positions.

The correct answer is: $left square bracket a plus 2 space b right square bracket$

$M equals open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets comma space N equals open square brackets table attributes columnalign left end attributes row a row b end table close square brackets$
We can understand the general process of matrix multiplication by the technique, "First rows are multiplied by columns (element by element) and then the rows are filled up. Multiplying matrices can be performed using the following steps:
Step 1: Make sure that the number of columns in the 1st matrix equals the number of rows in the 2nd matrix (compatibility of matrices).
$M equals open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets comma space C o l u m n s space equals space 2 space N equals open square brackets table attributes columnalign left end attributes row a row b end table close square brackets. space R o w s space equals space 2$
Step 2: Multiply the elements of ith row of the first matrix by the elements of jth column in the second matrix and add the products. This would the element that is in the ith row and jth column of the resultant matrix.
$M space cross times space N space equals space open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets cross times open square brackets table attributes columnalign left end attributes row a row b end table close square brackets equals open square brackets table attributes columnalign left end attributes row cell 1 cross times a plus 2 cross times b end cell end table close square brackets$
Step 3: Place the added products in the respective positions.
$M space cross times space N space equals open square brackets table attributes columnalign left end attributes row cell 1 cross times a plus 2 cross times b end cell end table close square brackets space equals space open square brackets table row cell a space plus space 2 b end cell end table close square brackets$

Related Questions to study

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 4 3 row 9 8 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 1 2 row 3 4 end table close square brackets$

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 4 3 row 9 8 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 1 2 row 3 4 end table close square brackets$

MathematicsGrade9

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 4 row 7 row 9 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 3 row 6 row 8 end table close square brackets$

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 4 row 7 row 9 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 3 row 6 row 8 end table close square brackets$

MathematicsGrade9

Add the matrices: $open square brackets table row 2 4 6 row 8 10 12 row 14 16 18 end table close square brackets comma open square brackets table row 1 3 5 row 7 9 11 row 13 15 17 end table close square brackets$

Add the matrices: $open square brackets table row 2 4 6 row 8 10 12 row 14 16 18 end table close square brackets comma open square brackets table row 1 3 5 row 7 9 11 row 13 15 17 end table close square brackets$

MathematicsGrade9

parallel

Add the matrices: $open square brackets table attributes columnalign left end attributes row a b row c d row e f end table close square brackets comma open square brackets table attributes columnalign left end attributes row 1 2 row 3 4 row 5 6 end table close square brackets$

Add the matrices: $open square brackets table attributes columnalign left end attributes row a b row c d row e f end table close square brackets comma open square brackets table attributes columnalign left end attributes row 1 2 row 3 4 row 5 6 end table close square brackets$

MathematicsGrade9

Is the product defined of the matrices AB and BA?
$A equals open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 4 row 5 row 6 end table close square brackets$

Is the product defined of the matrices AB and BA?
$A equals open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 4 row 5 row 6 end table close square brackets$

MathematicsGrade9

Multiply: $A equals open square brackets table attributes columnalign left end attributes row 1 2 row 3 4 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 5 row 6 end table close square brackets$ .

Multiply: $A equals open square brackets table attributes columnalign left end attributes row 1 2 row 3 4 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 5 row 6 end table close square brackets$ .

MathematicsGrade9

parallel

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 1 2 row 4 5 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 3 4 row 1 3 end table close square brackets$ .

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 1 2 row 4 5 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 3 4 row 1 3 end table close square brackets$ .

MathematicsGrade9

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 21 45 67 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 98 56 34 end table close square brackets$

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 21 45 67 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 98 56 34 end table close square brackets$

MathematicsGrade9

Add the matrices: $open square brackets table row 1 4 cell negative 2 end cell row cell negative 5 end cell 3 0 end table close square brackets comma space open square brackets table row 4 2 7 row 6 cell negative 5 end cell 9 end table close square brackets$

Add the matrices: $open square brackets table row 1 4 cell negative 2 end cell row cell negative 5 end cell 3 0 end table close square brackets comma space open square brackets table row 4 2 7 row 6 cell negative 5 end cell 9 end table close square brackets$

MathematicsGrade9

parallel

Add the matrices: $open square brackets table row cell negative 2 end cell row 4 end table close square brackets comma space open square brackets table row 3 row cell negative 2 end cell end table close square brackets$

Add the matrices: $open square brackets table row cell negative 2 end cell row 4 end table close square brackets comma space open square brackets table row 3 row cell negative 2 end cell end table close square brackets$

MathematicsGrade9

Multiply: $A equals open square brackets table attributes columnalign left end attributes row 2 3 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 4 row 5 end table close square brackets$

Multiply: $A equals open square brackets table attributes columnalign left end attributes row 2 3 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 4 row 5 end table close square brackets$

MathematicsGrade9

Subtract the matrices: $open square brackets table row 8 2 row 3 5 row cell negative 7 end cell 3 end table close square brackets comma space open square brackets table row 2 9 row cell negative 1 end cell cell negative 6 end cell row 7 0 end table close square brackets$

Subtract the matrices: $open square brackets table row 8 2 row 3 5 row cell negative 7 end cell 3 end table close square brackets comma space open square brackets table row 2 9 row cell negative 1 end cell cell negative 6 end cell row 7 0 end table close square brackets$

MathematicsGrade9

parallel

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 1 8 row 1 7 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 1 3 row 5 2 end table close square brackets$

Subtract the matrices: $open square brackets table attributes columnalign left end attributes row 1 8 row 1 7 end table close square brackets comma space open square brackets table attributes columnalign left end attributes row 1 3 row 5 2 end table close square brackets$

MathematicsGrade9

Add the matrices: $open square brackets table row 0 3 row 2 4 end table close square brackets comma space open square brackets table row 1 3 row 5 2 end table close square brackets$

Add the matrices: $open square brackets table row 0 3 row 2 4 end table close square brackets comma space open square brackets table row 1 3 row 5 2 end table close square brackets$

MathematicsGrade9

Add the matrices: $A equals open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 3 4 end table close square brackets$

Add the matrices: $A equals open square brackets table attributes columnalign left end attributes row 1 2 end table close square brackets comma space B equals open square brackets table attributes columnalign left end attributes row 3 4 end table close square brackets$

MathematicsGrade9

parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.