freeCodeCamp/problem-235-an-arithmetic-geometric-sequence.english.md at ef79ddd0de35a4e10b8b4588e67938f86d2bae10

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mrugesh 22afc2a0ca feat(learn): python certification projects (#38216 )

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Beau Carnes <beaucarnes@gmail.com>

2020-05-27 13:19:08 +05:30

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id, challengeType, isHidden, title, forumTopicId

id	challengeType	isHidden	title	forumTopicId
5900f4571000cf542c50ff6a	5	false	Problem 235: An Arithmetic Geometric sequence	301879

Description

Given is the arithmetic-geometric sequence u(k) = (900-3k)rk-1. Let s(n) = Σk=1...nu(k).

Find the value of r for which s(5000) = -600,000,000,000.

Give your answer rounded to 12 places behind the decimal point.

Instructions

Tests

tests:
  - text: <code>euler235()</code> should return 1.002322108633.
    testString: assert.strictEqual(euler235(), 1.002322108633);

Challenge Seed

function euler235() {
  // Good luck!
  return true;
}

euler235();

Solution

// solution required

914 B Raw Blame History