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Chang-Woo Rhee · Aug 02, 2026

Real-World Uses of Differentiation and IntegrationWhere calculus actually appears in daily life, engineering, and AI....

#math #differentiation #integration #calculus #real-world #ai #engineering

Chang-Woo Rhee · Aug 02, 2026

Natural Logarithm: ln(x)What ln means, its derivative, and why it's used in AI loss functions. What is ln?ln(x) = na...

#ln #logarithm #limits #cross-entropy #math #calculus #ai

Chang-Woo Rhee · Aug 02, 2026

Euler's Number: e ≈ 2.71828What it is, where it comes from, and why it appears everywhere in AI. What is e?A mathema...

#euler #e #softmax #sigmoid #math #calculus #ai

Chang-Woo Rhee · Aug 02, 2026

Neural Network Backpropagation — Worked ExamplePart 2: Complete forward pass and backward pass with actual numbers, A...

#python #sigmoid #math #integration #ai #backpropagation #neural network #chain rule #relu

Chang-Woo Rhee · Aug 02, 2026

Math for Gradient Descent — Worked Examples with NumbersPart 1: Derivatives, Partial Derivatives, Chain Rule, and Ful...

#gradient descent #math #calculus #ai #derivative #partial derivative #chain rule

Chang-Woo Rhee · Aug 02, 2026

Ruby Memory Internals — What Happens Per LineTracing exactly what Ruby allocates on stack and heap for each line of c...

#ruby #rails #memory #heap #stack #gc #rvalue #optimization

Chang-Woo Rhee

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