Having trouble converting a calculation in JavaScript

Question

I am having trouble converting a calculation over into JavaScript. Any help would be greatly appreciated. Below please find an example of what I currently have.

Im having difficulty converting this into javascript:

(a * (1 + b) ^ c) + d * (((1 + b) ^ (c) - 1) / b)

Variables

var a = 1250;
var b = 0.03;
var c = 25;
var d = 3234;
var total = 0;

Method

var getTotal = function() {
    var exponentBase = 1 + parseFloat(b);
    total = a * (Math.pow(exponentBase, c)) + d * 
    ((Math.pow(exponentBase, c) - 1) / b)
};

My getTotal comes up to 120526.48 But from what I am being told it should be 102297

Again any help would be greatly appreciated.

You don’t need parseFloat. The result is correct. I don’t see how this would equal 102297. — Sebastian Simon
– Sebastian Simon, Commented Mar 13, 2017 at 2:10

Robin Mackenzie · Accepted Answer · 2017-03-13 02:36:27Z

2

I'd rewrite the formula as:

(a * Math.pow((1 + b), c) + d * ((Math.pow((1 + b), c)) - 1) / b)

var aCalculation = function(a, b, c, d) {
  var total = 0;
  total = (a * Math.pow((1 + b), c) + d * ((Math.pow((1 + b), c)) - 1) / b);
  return total;
};

console.log(aCalculation(1250, 0.03, 25, 3234));

Excel agrees:

answered Mar 13, 2017 at 2:36

Robin Mackenzie

19.4k7 gold badges42 silver badges63 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Having trouble converting a calculation in JavaScript

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related