Error Troubleshooting Guide

Cause: The expression is missing required elements, such as a number after an operator or unclosed parentheses.

Examples:

• 2 + - Missing number after operator
• sin(30 - Missing closing parenthesis
• (2 + 3 - Missing closing parenthesis

Solution: Add the missing parts to complete the expression.

Cause: The number of opening and closing parentheses don't match.

Examples:

• ((2 + 3) - Extra opening parenthesis
• 2 + 3) - Extra closing parenthesis

Solution: Check and ensure each opening parenthesis has a matching closing parenthesis.

Cause: Attempting to divide by zero or calculate a negative power of zero.

Examples:

• 5 / 0 - Division by zero
• 10 / (5 - 5) - Results in division by zero

Solution: Check if the denominator is zero and avoid division by zero operations.

Cause: The function argument is outside the valid range.

Examples:

• sqrt(-1) - Negative numbers have no real square root
• log(0) - Zero has no logarithm
• log(-5) - Negative numbers have no real logarithm
• asin(2) - Inverse sine input must be in range [-1, 1]

Solution: Ensure function arguments are within the valid range.

Cause: Using an unsupported function name or variable name.

Examples:

• xyz(5) - xyz is not a valid function
• abc + 2 - abc is not a valid constant

Solution: Check spelling and use valid function names and constants.

Supported functions: sin, cos, tan, asin, acos, atan, log, ln, sqrt, cbrt, abs, exp, floor, ceil, round, factorial

Supported constants: pi (π), e

Cause: Factorial can only be calculated for non-negative integers.

Examples:

• (-3)! - Negative factorial is undefined
• 3.5! - Non-integer factorial (calculator may not support)

Solution: Ensure factorial operands are non-negative integers.

Cause: The calculation result exceeds the computer's representable range.

Examples:

• 1000! - Result is too large
• 10^1000 - Result is too large

Solution: Avoid calculating extremely large values, or use logarithms and other methods.