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docs/api/math/matrix4/determinant.md

@@ -0,0 +1,18 @@
+# Matrix4::Determinant
+
+```cpp
+float Determinant() const
+```
+
+计算矩阵的行列式。
+
+**返回：** `float` - 行列式值
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+Matrix4 m = ...;
+float det = m.Determinant();
+```