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member since | 2011-03-22 09:28:58 +0200 |

last seen | 2013-03-20 13:03:19 +0200 |

todays unused votes | 30 votes left |

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● Supporter × 1 ● Student × 1 ● Good Question × 1

● Famous Question × 2 ● Nice Question × 1 ● Popular Question × 4

- mistake in a indefinite integral
- can gridlines be painted at sqrt(2) ?
- strange way to simplify square roots
- using 'R' in sage: can not plot. errors of X11 and PNG

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