Calculus clicks once you build with it: chain rule, backprop explained
techNmak · x · 2026-10-22
techNmak writes a long-form piece on why calculus becomes a different subject in engineering: differentiation answers how sensitive a system's output is to small changes. He walks through how the chain rule assembles per-parameter sensitivity across long computation chains, how backpropagation reuses shared work to avoid rerunning the network, and why operation ordering, saved intermediates and memory budgets are the real engineering that makes it practical.
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