To enable AI-powered step-by-step solutions and math chat, paste your Anthropic API key below. It's saved only in your browser (localStorage) and never sent anywhere except directly to Anthropic's API.
How to get your key:
1. Go to console.anthropic.com
2. Sign up / log in
3. Navigate to "API Keys" → "Create Key"
4. Copy and paste it here ↓
Every calculation explained step by step — for free. No paywall, no account needed.
Equations, inequalities, systems, polynomials — any variable (x, a, b, t, n…)
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80+ essential formulas across physics, chemistry, math & more