2018-10-10 18:03:03 -04:00
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---
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id: 5900f4571000cf542c50ff6a
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challengeType: 5
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title: 'Problem 235: An Arithmetic Geometric sequence'
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videoUrl: ''
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localeTitle: 问题235：算术几何序列
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---
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## Description
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<section id="description">给定是算术几何序列u（k）=（900-3k）rk-1。设s（n）=Σk= 1 ... nu（k）。 <p>找到r的值，其中s（5000）= - 600,000,000,000。 </p><p>将您的答案四舍五入到小数点后面的12位。 </p></section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>euler235()</code>应该返回1.002322108633。
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2020-02-18 01:40:55 +09:00
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testString: assert.strictEqual(euler235(), 1.002322108633);
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2018-10-10 18:03:03 -04:00
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler235() {
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// Good luck!
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return true;
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}
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euler235();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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