💾 Memory Functions

• mc: Clear memory
• mr: Recall memory value
• m+: Add displayed number to memory
• m-: Subtract displayed number from memory

+ - × ÷ Basic Operations

• Addition/Subtraction: 3 + 5 = 8, 7 - 9 = -2
• Multiplication/Division: 13 × 3 = 39, 25 ÷ 2 = 12.5
• Repeating: Use = repeatedly to repeat the last operation.

🧠 Exponents and Roots

• √36 = 6
• 6² = 36, 6⁵ = 7776
• 1/x: reciprocal (e.g., 1/5 = 0.2)

⚙️ Order of Operations (PEMDAS)

Use parentheses or input in order:

• 3 + 5 × 2 ÷ 4 = 4
• 5 × 2 ÷ 4 + 3 = 5.5

💰 Financial Calculations

• PV = FV / (1+i)ⁿ → Present Value
• FV = PV(1+i)ⁿ → Future Value
• Example: FV of 10,000 at 7.3% for 5 years = 14,223.24

📊 Percentage Calculations

• 12 + 10% = 13.2 (add 10%)
• 10 − 10% = 9 (subtract 10%)
• 15 × 10% = 1.5 (find % of number)
• 15 ÷ 10% = 150 (find base number)

🧾 Advanced % Examples

• Tax Addition: 35.25 + 7.5% = 37.89
• Discount: 40 − 25% = 30 → + 7.5% tax = 32.25

🧹 Correcting Mistakes

• CE clears the last entry
• AC clears everything
• Backspace/Delete removes digits one by one

🔬 Scientific Functions

• Trigonometry: sin, cos, tan (and inverse functions)
• Powers: x², x³, xʸ, eˣ, 10ˣ
• Roots: √x, ³√x, ʸ√x
• Logarithms: ln (natural), log (base 10)

📐 Trigonometry Examples

• sin(30°) = 0.5
• cos(60°) = 0.5
• tan(45°) = 1
• sin⁻¹(0.5) = 30° (in Deg mode)
• Toggle between Deg/Rad for angle units

🌟 Constants & Special Functions

• π (Pi): 3.14159265...
• e (Euler's): 2.71828182...
• n! (Factorial): 5! = 120
• 1/x: Reciprocal function