How can I slove the maxtric
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HI all, I'm not understanding how the code computes a C matrix . pls help me
i am a newbie...
A=[2;0;0;0;1]
B=[5;1;4;1]
C=A(B,1)
---> C=[ 1;2;0;2]
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回答 (2 件)
John D'Errico
2021 年 2 月 17 日
You want to slove a matrix? Sorry. Valentines day was 3 days ago. Too late for s"love".
A is a column vector, composed of the elements [2 0 0 0 1].
B is a vector, used to index into the matrix (or vector) A.
What is the 5th element of A? Hint: Matlab uses a 1 based index system. So the 5th element of A is 1. Likewise, the 1st element of A is 1, etc.
David Hill
2021 年 2 月 17 日
C is produced from indexing the values of B into A.
A(5)=1;A(1)=2;A(4)=0;A(1)=2;
C=A(B);%don't need the 1
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