How to use it
- Type an expression in the field or tap the keys, for example
sin(30) + √16 × 2^3. - The result is shown below the expression as you type. Press = or Enter to put it into the field and keep calculating with it.
- Choose Degrees or Radians for trigonometry. ⌫ deletes one character, AC clears everything.
What it understands
| Write | Meaning | Example |
|---|---|---|
| + − × ÷ (or * /) | arithmetic | 7 × 6 = 42 |
| ^, x² | power | 2^10 = 1024 |
| √ or sqrt | square root | √16 = 4 |
| sin cos tan | trigonometry | sin 30 = 0.5 (degrees) |
| sin⁻¹ cos⁻¹ tan⁻¹ (asin acos atan) | inverse trigonometry | asin 1 = 90 (degrees) |
| log, ln | logarithm base 10 and natural | log 1000 = 3 |
| n! | factorial | 5! = 120 |
| % | divide by 100 | 50% = 0.5 |
| π, e | constants | 2π = 6.28318530718 |
A number written right before a bracket, a function or a constant is multiplied: 2π, 3(4 + 1) and 2 sin 30 all work. A missing closing bracket at the end is added for you.
Worked example
sin(30) + √16 × 2^3 in degrees: the power and the root come before multiplication, and multiplication before addition. sin 30° = 0.5, √16 = 4, 2³ = 8, so 0.5 + 4 × 8 = 0.5 + 32 = 32.5.
Good to know
- Results are rounded to 12 significant digits; very large and very small results are shown in scientific notation, such as 1E20.
- tan 90°, √ of a negative number, log 0 and dividing by 0 give a clear error instead of a strange number.
- Factorial is defined here for whole numbers 0 to 170; 171! is larger than the calculator can hold.