dot product for complex vector

Hello,

In the Matlab example, you have the dot product of the following two vectors A and B and its answer is vector C.
A = [1+i 1-i -1+i -1-i];
B = [3-4i 6-2i 1+2i 4+3i];
Calculate the dot product of A and B.

C = dot(A,B)
C = 1.0000 – 5.0000i

However, when I calculate it, I have vector C = 7 – 17i
That is, I have C vector results as follows below

(1+i) * (3-4i) + (1-i) * (6-2i) + (-1+i) * (1+2i) + (-1-i) * (4+3i) =
(7-i) +( 4-8i) + (-3-i) + (-1-7i) =
7 – 17i.

Hence, could you please tell me how the Matlab got the results (or show me manually how Matlab got the dot product answer) as I have different results than Matlab calculated using dot product?

Thank you,
CharlesHello,

In the Matlab example, you have the dot product of the following two vectors A and B and its answer is vector C.
A = [1+i 1-i -1+i -1-i];
B = [3-4i 6-2i 1+2i 4+3i];
Calculate the dot product of A and B.

C = dot(A,B)
C = 1.0000 – 5.0000i

However, when I calculate it, I have vector C = 7 – 17i
That is, I have C vector results as follows below

(1+i) * (3-4i) + (1-i) * (6-2i) + (-1+i) * (1+2i) + (-1-i) * (4+3i) =
(7-i) +( 4-8i) + (-3-i) + (-1-7i) =
7 – 17i.

Hence, could you please tell me how the Matlab got the results (or show me manually how Matlab got the dot product answer) as I have different results than Matlab calculated using dot product?

Thank you,
Charles Hello,

In the Matlab example, you have the dot product of the following two vectors A and B and its answer is vector C.
A = [1+i 1-i -1+i -1-i];
B = [3-4i 6-2i 1+2i 4+3i];
Calculate the dot product of A and B.

C = dot(A,B)
C = 1.0000 – 5.0000i

However, when I calculate it, I have vector C = 7 – 17i
That is, I have C vector results as follows below

(1+i) * (3-4i) + (1-i) * (6-2i) + (-1+i) * (1+2i) + (-1-i) * (4+3i) =
(7-i) +( 4-8i) + (-3-i) + (-1-7i) =
7 – 17i.

Hence, could you please tell me how the Matlab got the results (or show me manually how Matlab got the dot product answer) as I have different results than Matlab calculated using dot product?

Thank you,
Charles dot product MATLAB Answers — New Questions

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