How to calculate with imaginary numbers in JavaScript?

by

The math.js library supports complex numbers, matrices, and more. The library is compatible with JavaScript’s built-in Math library, so quite easy to use.

http://mathjs.org

You can just do things like:

math.i;                         // i
math.sqrt(-4)                   // 2i
var a = math.complex('2 + 3i'); // 2 + 3i
var b = math.complex(4, 5);     // 4 + 5i
math.add(a, b);                 // 6 + 8i
math.multiply(a, b);            // -7 + 22i
math.eval('e^(pi*i) + 1');      // ~0
// etc...

Edit: note that math.js comes with an expression parser, which makes it more convenient to work with complex values and mathematical expressions:

math.eval('(2 + 3i) * (4 + 5i)'); // -7 + 22i

More Related Contents:

  1. Get the percentage of a number with javascript [closed]
  2. how to use if(math.random == 50)? [closed]
  3. What is the quickest way to subtract a variable from a number and set the variable?
  4. Slope function error(sort-of)… again [closed]
  5. How to force JS to do math instead of putting two strings together [duplicate]
  6. JavaScript % (modulo) gives a negative result for negative numbers
  7. Javascript (+) sign concatenates instead of giving sum of variables
  8. JavaScript math, round to two decimal places [duplicate]
  9. Javascript: formatting a rounded number to N decimals
  10. What does the ^ (caret) symbol do in JavaScript?
  11. How to perform an integer division, and separately get the remainder, in JavaScript?
  12. Safe evaluation of arithmetic expressions in Javascript
  13. How can I remove the decimal part from JavaScript number?
  14. What is the fastest factorial function in JavaScript? [closed]
  15. What’s the algorithm to calculate aspect ratio?
  16. Adding to Number.MAX_VALUE
  17. How can I specify the base for Math.log() in JavaScript?
  18. Avoiding problems with JavaScript’s weird decimal calculations
  19. Calculating the shortest route between two points
  20. Float sum with javascript [duplicate]
  21. How does Math.random() work in javascript?
  22. JavaScript Number Split into individual digits
  23. JS how to find the greatest common divisor [closed]
  24. How to find the least common multiple of a range of numbers?
  25. How to simplify a decimal into the smallest possible fraction?
  26. Why does adding two decimals in Javascript produce a wrong result? [duplicate]
  27. Show a leading zero if a number is less than 10 [duplicate]
  28. parseFloat rounding
  29. JavaScript: Round to a number of decimal places, but strip extra zeros
  30. Javascript: PI (π) Calculator

Leave a Comment