# User Portlet

Discussions |
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Sean, Thanks for the reply. I'm trying to integrate "raw data" from an experiment and there are numerous raw data inputs. The data are A1's and they are converted to C1's which I'm manipulating to integrate. luke |

Given: L1 = {{x1,y1},{x2,y2},{x3,y3},{x4,y4},...........{xn,yn}}: how is L2 below, obtain: L2 = {{ax1,y1},{ax2,y2},{ax3,y3},{ax4,y4}.....{axn,yn}} |

Sean, could you expand; I'm looking for a result like Nintegrate[data1] = {{x1, y1?},{x2, y2?},{x3, y3?},{x4, y4?},............{xn, yn?}} not (-x1 + x2) y1 + (-x2 + x3) y2 + (-x3 + x4) y3 |

Can this result be extended for "n" elements as: Given the two lists; how do you multiply them? L1 = {{X1 , y1}, {X2 , y2}, {X3 , y3}, {X4, y4},
...,{Xn, yn}} L2 = {{X1 , z1}, {X2 , z2}, {X3 , z3}, {X4, z4},
,},{Xn, zn}} To obtain: L1*L2... |

Given an integral with a goal to plot the output as a function of one of the variable in the integrand. |

Integrate[Exp[- (2 \[Pi] S Abs[x-y])/B]* Cos[(2 \[Pi] S)*(x-y)]* Sin[1 \[Pi] x]Sin[1 \[Pi] y],{x,.001,1}, {y,.001,1}] Where S and B are input numbers and x and y are variables of integration |

Thanks David, I did as you suggested and the Greek symbol appeared. I used it to copy and paste where the symbol was needed and it worked great. Thanks |

David, I received your results and appropriately and successfully applied them. |

(When you say in your Notebook that the X's aren't right, is that because the X's (or rather your values for f) were integrated, too?) Yes Thanks; everything seemed to work ok except the calculation takes a long time and below is a comparison of... |

There are tabs above: dashboard, groups, and people. When help is requested from the "Community" ; times and dates should be on Dashboard requests. It would make easy to reference requests. |