If you actually try computing the eigen values of a rotation like this, notice what happens.

如果你试着计算像这样旋转值 注意会发生什么。

The fact that there are no real number solutions indicates that there are no eigen vectors.

没有实数解事实表明没有向量。

The only eigen value is two, but every vector in the plane gets to be an eigenvector with that eigen value.

唯一值2 但平面上每向量都具有这值向量。

All of the vectors on the x axis are eigen vectors with eigen valued one, since they remain fixed in place.

x轴上所有向量都值为1向量 因为它们保持固定。

In particular, I suspect that the reason for this is not so much that eigen things are particularly complicated or poorly explained.

别地 我怀疑这其中原因并不物别复杂或解释得很差。

Of course, there's nothing special about stretching versus squishing, or the fact that these eigen values happen to be positive.

当然 拉伸和挤压并没有什么别 或者说这些值正。

A sheer E.G. doesn't have enough eigen vectors to span the full space.

纯粹E G 没有足够向量来张成整空间。

But if you can find an eigen basis, it makes matrix operations really lovely.

但如果你能找到一基 它就会让矩阵运算变得非常可爱。

A set of basis vectors, which are also agen vectors, is called, again, reasonably enough, an eigen basis.

一组基向量 也就原向量 再一次 很合理地称为基。

In the world of functions, though sometimes they go by different names, things like inner product or eigen function.

在函数世界里 虽然有时它们有不同名字 比如内积或者函数。

A is the matrix representing some transformation with V as the icon vector, and lambda is a number, namely the corresponding eigen value.

A表示以V为图标向量某变换矩阵 lambda一数字 即对应值。

The determinant tells you how much a transformation scales areas and eigen vectors are the ones that stay on their own span during a transformation.

行列式告诉你变换对面积缩放程度向量在变换过程中保持在自己张成空间上向量。

And the way to interpret this is that all the basis vectors are eigenvectors, with the diagonal entries of this matrix being their eigen values.

解释这方法所有基向量都向量 这矩阵对角线元素它们值。

So finding the eigen vectors and their eigen values of the matrix A comes down to finding the values of V and lambda that make this expression true.

所以求出矩阵A向量和它们值归结为求出V和使这表达式成立值。

Confusion about agon stuffs usually has more to do with the shaky foundation in one of these topics than it does with eigenvectors and eigen values themselves.

对正交困惑通常更多与这些主题中一不稳定基础有关 而不与向量和值本身有关。

In this case, by the way, the corresponding eigen value would have to be one, since rotations never stretcher squish anything, so the length of the vector would remain the same.

顺便说一下 在这种情况下 对应值必须1 因为旋转不会拉伸压扁任何东西 所以向量长度保持不变。

For those of you wondering why we care about alternate coordinate systems, the next video on eigen vectors and eigen values, we'll give a really important example of this.

对于那些想知道为什么我们要关心交替坐标系人 下一集关于向量和值视频 我们会给出一很重要例子。