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LL1 grammar analysis. Yet another top-down parser generator.

The calculator checks LL1 grammar correctness, parses a text using the grammar, shows FIRST, FOLLOW and FIRST PLUS sets, parsing tree and gives PLANETCALC parsing code.

LL1 parser generatorCreative Commons Attribution/Share-Alike License 3.0 (Unported)

Math equation syntax

Math equation samples.

Math equation syntaxCreative Commons Attribution/Share-Alike License 3.0 (Unported)
  • Loan payment example
  • Logarithm

    This online calculator outputs logarithm of a number to a given base, as well as natural logarithm and common (decadic) logarithm

  • Luhn algorithm

    Calculates digit sequence checksum using Luhn algorithm (mod 10), calculates validation digit (the digit to be appended to the digit sequence to make whole sequence ckecksum equal to zero).

  • Math equation simplification

    Simplifies math equation with single variable (x). In eqation you may also use integer and fractional numerical constants arithmetic operations, trigonometric and hyperbolic functions.

  • Math operations on degrees

    This online calculator supports simple mathematical operations, addition/subtraction/multiplication/division, on degrees

  • Math worksheets generator for elementary school

    Random worksheets, which are generated automatically from user parameters.

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