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Chapter 1: Q17E (page 35)

Compute the products Ax in Exercises 16 through 19

using paper and pencil (if the products are defined).

17.


[123456].[78]

Short Answer

Expert verified

The dot product of [123456].[78]is not defined

Step by step solution

01

Step 1:

For the first matrix, [123456]

The number of columns m= 3

For the second matrix 78

The number of rows n= 2 n= 2

Therefore, we have m鈮�n.

Hence, dot product is not possible.

02

Final answer:

The dot product of[123456].[78]is not defined

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Most popular questions from this chapter

Let A be a 4 脳 4 matrix, and let b鈫�andc鈫� be two vectors in鈩�4 . We are told that the systemAx鈫�=b鈫� is inconsistent. What can you say about the number of solutions of the systemAx鈫�=c鈫� ?

Let A be a 4 脳 3 matrix, and letb鈫�and c鈫� be two vectors in 鈩�4. We are told that the systemrole="math" localid="1659341825668" Ax鈫�=b鈫� has a unique solution. What can you say about the number of solutions of the systemAx鈫�=c鈫� ?

Question:Solve the linear system

|y+z=aX+z=bx+y=C|, where a,b andcare arbitrary constants.

Find the circle that runs through the points (5,5),(4,6),and (6,2). Write your equation in the forma+bx+cy+x2+y2=0. Find the centre and radius of this circle.

Find all the polynomials of degree鈮�2[a polynomial of the form f(t)=a+bt+ct4] whose graph goes through the points role="math" localid="1659337996890" (1,1)and(3,3), such thatf'(2)=1.
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