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linearalgebra-notes's Introduction

Hi there, I'm Lin.JY 🍓

An engineer and explorer. Let's improve everything.

  • 👧 Lin.JY
  • 🔭 Working as Senior FE Engineer @bytedance. former @meituan staff.
  • 🌱 Learning more in domain of Artificial Intelligence, Data Structure.
  • 💬 Ask me about anything, I'm happy to help!
  • 📫 Read more of contact me via Email, Twitter or Wechat.
  • 📚 2022 Goals: Learn something new / Expand knowledge / Alive

Have a fun day!

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linearalgebra-notes's Issues

[1] Vector 向量是什么

3blue1brown

向量 Vector

vector addition and vector multiplication 向量加法和乘法贯穿始终

  • 对于物理: 向量表示position 和 length
  • 对于CS: 多维度数据整合,为了方便计算,得出最后结果

image

向量加法 Vector Addition

1_vector_addtion

向量乘法

略过

总结

了解向量,并理解几何意义 (方向指引,行走路径,得出最终目的地)。

[3] Matrices as Linear Transformation

Linear Transformation (movement)

概念

transformation = movement 按照移动思考,从位置A 移动到位置B。
image

linear 线性即都是直线的变化。
image

理解变化后的线性组合

基向量 yyds。
image

🌰

image

计算

  • (x, y) 是在基向量为(0,1) (1,0) 情况下的坐标。
  • 经过变换,已知变换后的基向量,就可以知道变换后的(x, y) 何去何从。
    image

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