Supported Syntax & Functions:

• Variable: x
• Constants: e.g., 3.14, -2
• Operators: +, -, *, /, ^ (power)
• Functions: sin(u), cos(u), tan(u), asin(u), acos(u), atan(u), exp(u), ln(u), log10(u), sqrt(u)
• Parentheses for grouping: ( )
• Implicit multiplication for constants and variables/functions (e.g., 2x as 2*x, 3sin(x) as 3*sin(x)) is supported.
• Example: 2*x^3 - sin(x^2) + ln(x)/exp(x)
• Note: The parser is powerful but ensure syntax is clear. Complex nested functions are generally supported. For `log` without a base, `ln` (natural log) is assumed. `log10(u)` is for base 10.