💾 Memory Operations

Memory keys allow you to store and reuse values without writing them down:

• MC – Clears any value saved in memory
• MR – Displays the stored memory value
• M+ – Adds the current number to memory
• M− – Subtracts the current number from memory

These functions are useful when working with long or repeated calculations.

➕➖✖️➗ Basic Arithmetic

You can easily perform standard calculations such as:

• Addition & Subtraction:
  Example: 3 + 5 = 8, 7 − 9 = −2
• Multiplication & Division:
  Example: 13 × 3 = 39, 25 ÷ 2 = 12.5

Pressing the equals (=) key multiple times will repeat the last operation automatically.

🧠 Powers, Roots & Reciprocals

Scientific calculators support exponential and root calculations:

• Square root: √36 = 6
• Powers: 6² = 36, 6⁵ = 7776
• Reciprocal: 1 ÷ 5 = 0.2

These functions are useful in math, science, and engineering problems.

⚙️ Calculation Order (PEMDAS Rule)

The calculator follows the correct order of operations:

• Multiplication and division are performed before addition and subtraction
• Use parentheses when needed

Examples:

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

💰 Financial Calculations

You can calculate present and future values using standard formulas:

• Present Value (PV): PV = FV ÷ (1 + i)ⁿ
• Future Value (FV): FV = PV × (1 + i)ⁿ

Example:
An amount of 10,000 growing at 7.3% for 5 years results in a future value of 14,223.24.

📊 Percentage Calculations

Percentage functions simplify daily calculations:

• Increase by percentage: 12 + 10% = 13.2
• Decrease by percentage: 10 − 10% = 9
• Find percentage of a value: 15 × 10% = 1.5
• Find original value: 15 ÷ 10% = 150

🧠 Practical Percentage Examples

• Adding tax: 35.25 + 7.5% = 37.89
• Discount then tax:
  40 − 25% = 30 → add 7.5% tax = 32.25

🧠 Fixing Input Errors

If you make a mistake:

• CE removes the last entered value
• AC clears the entire calculation
• Backspace/Delete removes digits one at a time

🔬 Scientific Functions

Advanced functions include:

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

📐 Trigonometry Examples

• sin(30°) = 0.5
• cos(60°) = 0.5
• tan(45°) = 1
• sin⁻¹(0.5) = 30° (Degree mode)

You can switch between Degree (Deg) and Radian (Rad) modes as needed.

🌟 Constants & Special Functions

Common constants and special operations include:

• π (Pi): 3.14159265…
• e (Euler's number): 2.71828182…
• Factorial (n!): 5! = 120
• Reciprocal (1/x): Calculates the inverse of a number