Opened 11 years ago

Last modified 10 years ago

## #10682 closed defect

# sum fails with lower bound != 0 or 1 — at Version 1

Reported by: | fmaltey | Owned by: | burcin |
---|---|---|---|

Priority: | critical | Milestone: | sage-5.0 |

Component: | symbolics | Keywords: | maxima 5.26.0 binomial sum |

Cc: | mjo | Merged in: | |

Authors: | Reviewers: | ||

Report Upstream: | N/A | Work issues: | |

Branch: | Commit: | ||

Dependencies: | Stopgaps: |

### Description (last modified by )

I test

sage: var ('n,k') sage: sum (binomial(n,k)*k^2, k, 0, n) # is right sage: sum (binomial(n,k)*k^2, k, 1, n) # is right n(n+1)2^(n-2) sage: sum (binomial(n,k)*k^2, k, 2, n) # is false : I get 0

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