Problem 42647. Recursion - Fun

Created by Manish Joshi

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ Generate the first k terms in the sequence a(n) define recursively by \n\n a(n+1)=p*a(n)+(1+a(n)) with p=0.9 and a(1)=0.5\n\nTest Case\n\n    n = 2;\n    a = [a(1) a(2)] = [0.5000    1.9500]]]></w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

158 Solutions
19 Solvers

Last Solution submitted on Aug 12, 2020

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

Guillaume on 3 Dec 2015

The difficulty with this problem is not generating the sequence, that is trivial, but to conform to the completely arbitrary and inaccurate rounding rules of the test suite.

bainhome on 26 Jun 2018

Something I really want to tell the one who create this problem: base on this test suite you just made, I'm positively sure that you've learned your lesson in gym class.

Rafael S.T. Vieira on 12 Aug 2020

Need to round the results to 4 decimal places, and for one of the cases multiply by 1e5*round(out/1e5,4). I am pretty sure the author ran the function and just copied and pasted its result in the test suite. Not a good idea for single or double numbers. The test suite needs some tolerance to error due to numeric imprecision.

Solution Comments

Solution 869707

1 Comment

1 Comment

William on 10 Apr 2016

Check your y_correct for x=20 for extraneous whitespace characters.

Problem Recent Solvers19

Problem Tags

Problem 42647. Recursion - Fun

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers19

Suggested Problems

More from this Author3

Problem Tags

Problem 42647. Recursion - Fun

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers19

Suggested Problems

More from this Author3

Problem Tags

Players