Re: multiintegral and table

*To*: mathgroup at smc.vnet.net*Subject*: [mg131653] Re: multiintegral and table*From*: "djmpark" <djmpark at comcast.net>*Date*: Sun, 15 Sep 2013 07:10:47 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net*References*: <23415788.249880.1379153301017.JavaMail.root@m06>

I don't know if your example is a simplified version of something more general. In any case you can simplify things before you get to the plotting. Specifically you can evaluate the integrals and arrive at a simple expression that you can plot with the much easier Plot statement. f1 = Integrate[2*y + x^2, {x, 0, 1}, {y, 0, x}] 7/12 f2[q_] = Integrate[2*y + x^2*q, {x, 0, 1}, {y, 0, x}] 1/3 + q/4 ftotal[q_] = f1 + f2[q] 11/12 + q/4 Plot[ftotal[q], {q, 0, 10}] David Park djmpark at comcast.net http://home.comcast.net/~djmpark/index.html From: Parada Hutauruk [mailto:phutauruk at gmail.com] Dear all, I have a function f_1 [x_,y_] = Integrate[2*y + x^2, {x,0,1},{y,0,x}] f_2 [x_,y_,Q_] = Integrate[2*y +x^2*Q, {x,0,1},{y,0,x}] f_total [x_,y_,Q_] = f_1[x,y] + f_2[x,y,Q] Then I want to plot the f total using table with Q start from 0 to 10 with increment 0.0025. I have defined by dataxx = Table[{Q,f_total[x,y,Q]}, {Q, 0,10, 0.0025}] And Plot the data on the table by ListPlot[dataxx] But when I evaluate the function, it took a long time and the plot is not yielded. Could anyone help me please to find the bug? I really appreciate for help. Thanks, PTPH