matlab givens
时间: 2023-07-13 13:18:07 浏览: 47
Givens rotations, also known as Givens transformations or plane rotations, are a class of linear transformations used in linear algebra and numerical computation. In Matlab, the `planerot` function can be used to compute a Givens rotation matrix given two input values, which represent the elements of a 2x1 vector to be rotated.
The syntax for `planerot` is as follows:
```
[c, s] = planerot(x, y)
```
where `x` and `y` are the two input values, and `c` and `s` are the cosine and sine of the rotation angle, respectively. The output of `planerot` is a 2x2 matrix representing the Givens rotation.
Givens rotations are commonly used in numerical algorithms for solving systems of linear equations, least-squares problems, and eigenvalue problems, among other applications.