∇λ∫∑
LabsCalculus · A small change, twice
Chain rule, two maps
x → u → y. See du and dy from dx. Backprop is this picture with more names.
Ask about this picture- du/dx = 2x
- 1.60
- dy/du = cos u
- 0.80
- dy/dx = product
- 1.28
dx 0.25 → du 0.400 → dy 0.321
2x = 1.6 and cos u = 0.80. The two slopes multiply: 1.28.
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Chain rule, two maps
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