### Related

E1(x):=realpart(-expi...

h(Bo):=exp(Bo/8)*E1(B...

h(0.2);

Calculate

E1(x):=realpart(-expi...

h(Bo):=exp(Bo/8)*E1(B...

h(0.1);

Calculate

E1(x):=realpart(-expi...

h(Bo):=exp(Bo/8)*E1(B...

h(0.1);

Calculate

##### expintegral_e

expintegral_e(1,100.0...

Calculate

##### expintegral_e-realpart

E1(x):=realpart(-expi...

h(Bo):=exp(Bo/8)*E1(B...

h(0.015);

Calculate

##### expintegral_e-realpart

E1(x):=realpart(-expi...

h(Bo):=exp(Bo/8)*E1(B...

h(0.015);

Calculate

##### expintegral_e

expintegral_e(1,10.00...

Calculate

##### expintegral_e

expintegral_e(1,1.000...

Calculate

##### expintegral_e-realpart

realpart(-expintegral...

Calculate

##### expintegral_e-floor-matrix-mod-sin

sin([x,1,1.0]);

mod([x,11,2*a],10);

mod([[x,y,z],11,2*a]...

Calculate

### expintegral_e

Run Example
```(%i1)expintegral_e (v,z);
(%o1)                         expintegral_e(v, z)
(%i2) param(b>
1,q>
0,q<
=1);
(%o2)                     param(b > 1, q > 0, q <= 1)
(%i3) g(t) := (t^b)*(q^t);
b  t
(%o3)                            g(t) := t  q
(%i4) G(ND):=integrate(g(t),t,0,ND);
(%o4)                 G(ND) := integrate(g(t), t, 0, ND)
(%i5) d2:diff(g(ND),ND);
ND          b      ND   b - 1
(%o5)                   q   log(q) ND  + b q   ND
(%i6) expand(d2);
ND          b      ND   b - 1
(%o6)                   q   log(q) ND  + b q   ND
(%i7) d3:diff(d2,ND);
ND    2      b        ND          b - 1              ND   b - 2
(%o7)  q   log (q) ND  + 2 b q   log(q) ND      + (b - 1) b q   ND
(%i8) ```
Run Example
```expintegral_e(1,-0.00001);
(%o1)               10.9356998000437 - 3.141592653589793 %i
(%i2) ```
Run Example
```expintegral_e(1,1.00000);
(%o1)                          0.21938393439552
(%i2) ```

### Related Help

Help for Expintegral_e