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2014-08-18 16:30:28 -0600 | asked a question | Bitwise NOT Operator for Sage? 0b1000 & 0b1001 (AND) 0b1000 | 0b1001 (OR) 0b1000 ^^ 0b1001 (XOR) All of these work as bitwise operators on the command line -- but how do I do bitwise NOT? |

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2013-11-29 09:56:18 -0600 | asked a question | Moving the decimal point I would like to have my answer expressed not in scientific notation... how would I do this? For example, instead of reporting 2.12345e5, I just want 212345 Thanks! |

2013-10-02 10:11:16 -0600 | marked best answer | How do I assign solutions of an equation to a variable? You can use the method |

2013-10-02 08:10:03 -0600 | asked a question | How do I assign solutions of an equation to a variable? a = solve(1-z-z^2==0,z)[0] has the result of a being 'z=-1/2*sqrt(5)-1/2' But I would like to have just a = '-1/2*sqrt(5)-1/2' How do I convert the expression to a number? Thanks! |

2013-09-04 06:55:44 -0600 | asked a question | 3dplot of modulus of complex function Even though abs(x+I*y) should always be real... I get the following error: plot3d(abs(x+I*y),(x,-5,5),(y,-5,5)) ERROR: unable to coerce to a real number |

2013-08-27 07:15:14 -0600 | commented answer | Plotting Sequence of Points Thank you - that works. |

2013-08-27 06:43:54 -0600 | asked a question | Plotting Sequence of Points How do I plot the sequence {1/n} for n = 1 to 100 in Sage? I browsed plot?, but didn't see it as an option, or I didn't know what it was called. |

2013-07-25 04:45:59 -0600 | marked best answer | Binomial in a Summation Sum is working only in a symbolic ring. So you can convert your integers to the symbolic ring as follows: You can also use the |

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2013-07-25 03:28:29 -0600 | asked a question | Binomial in a Summation sage: var('k') k sage: sum(binomial(5,k),k,0,5) I get an error "cannot convert k to int" But if instead I try something like sum(binomial(n,k),k,0,n), everything is just fine. Anyone know how I can get around this? |

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2013-07-10 04:47:01 -0600 | marked best answer | Summing with Euler_phi Error I guess this is because Nevertheless, you can do |

2013-07-10 04:29:53 -0600 | asked a question | Summing with Euler_phi Error New to sage, having some trouble with summation. z, k both declared as variables. sum((euler_phi(k)/k) Error: not an integer argument in an arithmetic function (18) If I change it to euler_phi(5)/5 it's fine. |

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