Calculator [UPDATED v3.2]

Calculator [UPDATED v3.2]
Compatibile con
Smart Band 10 app
Idiomas compatibles
en
Data aggiunta: 28.12.2025 18:24
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Descrizione

Main changes:
1. Returns to the numeric keypad page after each mathematical symbol input, enhancing input smoothness.
2. Added logarithm calculations, including common logarithms, natural logarithms, and logarithms with arbitrary bases (log(property/base) log(8/2) = 3, i.e., log₂8)
. 3. Added factorial.
4. Added QR code to jump to the current post?

Calculator Instructions (AI-written - Human-proofed):

Basic Operations
Numbers and Symbols: Click 0–9, ., +, -, *, /, (,) for basic calculations.
Example: (5 + 3) * 2 = 16
Clear:
C: Clear all input
(Delete key): Delete the last character
Equal to: Click = to see the result

Exponentiation
Use ** to represent exponents (JavaScript standard syntax)
Example:
2**3 → 8 (2 to the power of 3)
4**(1/2) → 2 (square root)
8**(-1) → 0.125 (reciprocal)
e**2 → ≈7.389
PI**2 → ≈9.8696
Tip: Use parentheses for negative or fractional exponents, such as 2* (-3), 27* (1/3)

Modulo (%)
% represents modulo, not percentage!
Syntax: a % b → Returns the remainder of a divided by b
Examples:
10 % 3 → 1
15 % 4 → 3
7 % 2 → 1
Note: The sign of the result must match the dividend, e.g., -7 % 3 → -1
Percentages are not supported (e.g., 50% will be treated as 50% [the next number], usually leading to errors)

Mathematical Functions (Click "More" to expand)
Button Function Input Format Example
√ Square Root sqrt(x) sqrt(25) → 5
c Cosine cos(x) cos(0) → 1
s Sine sin(x) sin(PI/2) → 1
t Tangent tan(x) tan(PI/4) → 1
x! Factorial fact(x) fact(4) → 24
lg Common Logarithms (base 10) lg(x) lg(100) → 2
log Logarithm with any base log(argument/base) log(8/2) → 3 (i.e., log₂8)
ln Natural logarithm (base e) ln(x) ln(e) → 1
Note:
All functions require manual completion of the right parenthesis, such as sin(PI/2).
Trigonometric function parameters are in radians (π radians = 180°).
Factorials only accept non-negative integers, with a range of 0 ≤ n ≤ 170.

Constant
Π → Pi (≈3.1415926535)
e → Natural constant e (≈2.7182818284)
Examples: e**PI, PI*e, cos(PI), etc. can all be used directly.

Usage Tips
Nested calls: fact(sqrt(16)) → fact(4) → 24
Mixed expressions: 2**3 + lg(1000) - 10%3 → 8 + 3 - 1 = 10
exact square root: 16**(1/4) → 2 (fourth root)
Negative number handling: (-2)**3 → -8 (parentheses are required)

Common errors
Incorrect input reason Correct writing
log(8,2) comma separation not supported log(8/2)
sin 30 missing parentheses sin(30) (and 30 is in radians!)
50% alone meaningless % must be between two numbers, such as 100%7

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