## How do you subtract a vector in MATLAB?

C = A – B subtracts array B from array A by subtracting corresponding elements. The sizes of A and B must be the same or be compatible. If the sizes of A and B are compatible, then the two arrays implicitly expand to match each other.

## What is a row vector in MATLAB?

Row vectors are created by enclosing the set of elements in square brackets, using space or comma to delimit the elements. r = [7 8 9 10 11] MATLAB will execute the above statement and return the following result − r = 7 8 9 10 11.

**How does MATLAB calculate row?**

M = mean( A ) returns the mean of the elements of A along the first array dimension whose size does not equal 1.

- If A is a vector, then mean(A) returns the mean of the elements.
- If A is a matrix, then mean(A) returns a row vector containing the mean of each column.

### How do you add and subtract in MATLAB?

Type c = a + b and press Enter. Type d = b – a and press Enter. Type e=[1,2,3;4,5,6] and press Enter. If you attempt to add or subtract matrix e from either matrix a or matrix b, you see an error message.

### How do you subtract rows from a matrix?

The number of rows and columns should be the same for the matrix subtraction. The subtraction of a matrix from itself results in a null matrix, that is, A – A = O. Subtraction of matrices is the addition of the negative of a matrix to another matrix, that is, A – B = A + (-B).

**How do you find the norm of a vector in Matlab?**

n = norm( v ) returns the Euclidean norm of vector v . This norm is also called the 2-norm, vector magnitude, or Euclidean length. n = norm( v , p ) returns the generalized vector p-norm. n = norm( X ) returns the 2-norm or maximum singular value of matrix X , which is approximately max(svd(X)) .

#### How do you convert a row vector to a column vector in MATLAB?

You can convert a row vector into a column vector (and vice versa) using the transpose operator ‘ (an apostrophe).

#### How do you zero a vector in MATLAB?

X = zeros( sz ) returns an array of zeros where size vector sz defines size(X) . For example, zeros([2 3]) returns a 2-by-3 matrix. X = zeros(___, typename ) returns an array of zeros of data type typename . For example, zeros(‘int8’) returns a scalar, 8-bit integer 0 .

**How do I find the mean of a vector?**

Mean Scores: Vectors

- x = Σxi / n.
- where x is the mean of observations, Σxi is the sum of all observations, and n is the number of observations.
- x = 1’x ( 1’1 )-1 = 1’x ( 1/n )
- x is the mean of a set of n scores.
- x = 6/3 = 2.
- Xc = Σ Xic / r.
- Xc is the mean of a set of r scores from column c.