如何计算Projection
learn.whatIsHeading
Vector projection (proj_b a) shows component of vector a in direction of vector b; used in physics, graphics.
分步指南
- 1Input two vectors
- 2Calculate scalar projection: (a·b)/|b|
- 3Results show vector projection and scalar
例题解析
输入
a=(3,4), b=(1,0)
结果
Scalar proj = 3, vector proj = (3,0)
常见错误注意事项
- ✕Using dot product alone (missing direction)
- ✕Not normalizing vector b
常见问题
How is this different from dot product?
Dot product gives scalar; projection gives vector in b's direction.
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