מחשבון מדעי

✨ Enhanced Features

• • Calculation History: Track last 20 calculations with timestamps
• • Custom Variables: Store and reuse values like x, y (includes π and e)
• • Scientific Functions: sin, cos, tan, sqrt, log, ln, and more
• • Safe Evaluation: Uses math.js library for secure calculations
• • Recall & Reuse: Click history items to recall results