How to read this
At two directions matter. Along the ray all inputs grow together: is the percentage change in output per 1% more of all inputs. Along the isoquant output stays put: is the percentage change in per 1% change in the MRTS.
- Drag : both are local and change from point to point. Shade by e or Shade by σ to see the whole map.
- Cobb-Douglas and CES of degree k: both are constant everywhere.
- B: h(φ) and C: φ(f, g) transform the technology: B changes but not , C can change both.