Gradient Descent Valley
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Make the step. Read the valley.
Predict first. Then inspect how one learning rate turns the gradient into convergence, a shrinking zig-zag, or escape.
startupdatesminimum
Canvas unavailable. The exact equation, prediction feedback, computed trajectory, and export remain operable in the control panel.
Challenge 1: read the sign1 / 3
At η = 0.20, what happens from (4, 3)?
smooth ≤ 0.125unstable ≥ 0.25