## Strange Integration Error from Mathematica

I’m trying to integrate this function, and Mathematica gives the following “message”

```
Integrate[n \[Mu] x/(1 - (1 - E^(-n x \[Mu])) Subscript[\[Lambda], R]), {x, \[Theta], T}]
```

Any ideas what this means?

n^2 (T^2 – [Theta]^2) [Mu]^2 Subscript[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[\[Lambda]]]], R] +

Subscript[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[[Lambda]],

R] (-n^2 T^2 [Mu]^2 + n^2 [Theta]^2 [Mu]^2 +

2 n T [Mu] Log[

1 – E^(n T [Mu]) +

E^(n T [Mu])/

Subscript[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[\[Lambda]]]],

R]] – 2 n \[Theta] \[Mu] Log[

1 – E^(n \[Theta] \[Mu]) +

E^(n \[Theta] \[Mu])/

Subscript[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[[Lambda]]]],

R]] + 2 PolyLog[2,

E^(n T [Mu]) (1 –

1/Subscript[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[\[Lambda]]]],

R])] – 2 PolyLog[2,

E^(n \[Theta] \[Mu]) (1 –

1/Subscript[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[[Lambda]]]],

R])] – 2 (n T [Mu] Log[

1 – E^(n T [Mu]) +

E^(n T [Mu])/

Subscript[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[\[Lambda]]]],

R]] – n \[Theta] \[Mu] Log[

1 – E^(n \[Theta] \[Mu]) +

E^(n \[Theta] \[Mu])/

Subscript[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[[Lambda]]]],

R]] + PolyLog[2,

E^(n T [Mu]) (1 –

1/Subscript[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[\[Lambda]]]],

R])] –

PolyLog[2,

E^(n \[Theta] \[Mu]) (1 –

1/Subscript[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`evars$ 2437] &)[[Lambda]]]],

R])]) Subscript[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[\[Lambda]]]],

R]))/(2 n \[Mu] (-1 +

Subscript[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[[Lambda]],

R])^2 Subscript[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[(Collect[#1,

Integrate`TableDump`evars$ 2421] &)[(Collect[#1,

Integrate`TableDump`

evars$ 2437] &)[[Lambda]]]], R])