Double Integral of long expressions in Mathematica

• To: mathgroup at smc.vnet.net
• Subject: [mg80950] Double Integral of long expressions in Mathematica
• From: "Negede Abate" <negedea at googlemail.com>
• Date: Thu, 6 Sep 2007 05:25:55 -0400 (EDT)

```Some of you sent me a message that the format of my code was corrupted and
unreadable. I am posting my question again. I wanted to help me in solving
the double integral for the two equations Int1 and Int2. Or any means of
working around... my attempts failed

*f1=1.9909018246727283*^-44*E^((4.681111111111111-0.05555555555555555*y)*y);

f2=(5.778367760333042*^-19*(11.12+z)^12.13)/E^(4.4008893833458054*^-20*(
11.12+z)^13.13);

f3=Abs[Cot[0.017453292519943295*y]];

f4=0.0037739313253375532/E^(0.000044744314476429635*(449.96310600570723 -
55.69524532558123*z + 1.*x*Cot[0.017453292519943295*y])^2);

f5=(7.133612341840616*^-13*(-18.963106005707232+55.69524532558123*z-1.*x*Cot
[0.017453292519943295*y])^3.8)/E^(1.4861692378834617*^-13*(-
18.963106005707232+55.69524532558123*z-1.*x*Cot[0.017453292519943295*y])^4.8
);

Int1= f1 f2 f3 f4;

Int2= f1 f2 f3 f5;

(*I wanted to get the following two double integrals*)

Int11=Integrate[Int1,{y,35,50},{z,10,23}]

Int22=Integrate[Int2,{y,35,50},{z,10,23}]

Thanks,

negede
*

```

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