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Math

Fourier Series Visualization

Any periodic function can be represented as a sum of sine functions of different frequencies

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Audio Analysis and Visualization Tools

Visualize audio, inspect stereo, diagnose signal and timing, and check files before delivery.

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Regex Testing, Visualization, and Safety Workflow

Build reliable regular expressions by learning syntax, testing matches, visualizing structure, previewing replacements, benchmarking alternatives, and scanning for ReDoS risk.

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Differential Equations, Transforms, and Numerical Methods

Solve engineering math problems across ODEs, Laplace or Z transforms, convolution, and numerical approximation while checking method fit, units, and initial conditions.

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Data Quality and Anomaly Investigation Workflows

Profile tabular data, isolate duplicates, missingness, referential breaks, outliers, and time-series anomalies, and turn findings into defensible quality evidence.

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Article to X and LinkedIn Drafts: Fact Review and Handoff
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Format Conversion

AsciiMath LaTeX MathML Equation Converter

Convert equations between AsciiMath, LaTeX and MathML: auto-detect the input format, produce canonical LaTeX, presentation MathML with an embedded TeX annotation, a best-effort AsciiMath back-translation, a screen-reader aria-label snippet (role=math), and a KaTeX HTML preview.

Math & Numbers

Series Convergence Tester (Ratio/Root/Integral/Comparison)

Numeric convergence tests for Σ aₙ: nth-term, ratio, root, p-series comparison, and integral test; alternating series classified by Leibniz with a sum estimate.

Math & Numbers

Fourier Series Calculator

Calculate Fourier series coefficients for common waveforms

Science & Education

Hydrogen Spectrum Series Calculator

Rydberg lines for Lyman/Balmer/Paschen/Brackett/Pfund: vacuum wavelengths, photon energies, named lines with Balmer colors, series limit.

Chemistry

Zero-Order Reaction - Interactive Visualization

Interactive visualization of zero-order reaction kinetics and concentration changes over time

Chemistry

First-Order Reaction - Interactive Visualization

Interactive visualization of first-order reaction kinetics and exponential concentration decay

Chemistry

Second-Order Reaction - Interactive Visualization

Interactive visualization of second-order reaction kinetics and bimolecular collision dynamics

Chemistry

Arrhenius Equation

Interactive visualization of temperature effect on reaction rate - Explore activation energy, pre-exponential factor, and rate constant relationship

Chemistry

Reversible Reaction

Interactive visualization of A ⇌ B reversible reaction kinetics - Explore forward and reverse reaction rates, equilibrium constant, and concentration changes over time

Chemistry

Consecutive Reaction

Interactive visualization of A → B → C consecutive reaction kinetics - Explore intermediate concentration peaks, rate-determining steps, and complete evolution of all species

Chemistry

Chain Reaction

Interactive visualization of free radical chain reaction polymerization - Explore initiation, propagation, termination steps, chain growth animation, and molecular weight distribution

Chemistry

Le Chatelier's Principle

Interactive visualization of Le Chatelier's Principle - Explore how changes in concentration, pressure, and temperature affect chemical equilibrium with animated molecular dynamics