# Need Help

Started by October 13, 2017
```Can anybody provide me the solution for following problem. It will be great help.

adap-tive &#64257;lter that attempts to minimize the following cost function:
J(n)=E{|e^2(n)|}.         e(n)<1
=E{|e^3(n)|}.         e(n)>=1

```
```On Friday, October 13, 2017 at 5:34:30 PM UTC-7, ankita bombatkar wrote:
> Can anybody provide me the solution for following problem.
> It will be great help.

> Adaptive filter with variable update equation: Develop a
> the following cost function:
> J(n)=E{|e^2(n)|}.         e(n)<1
>     =E{|e^3(n)|}.         e(n)>=1

Discuss your thoughts so far, and I am sure you will get some
help here.  Do you have a partial solution, but got stuck
along the way?
```
```On Friday, October 13, 2017 at 7:34:30 PM UTC-5, ankita bombatkar wrote:
> Can anybody provide me the solution for following problem. It will be great help.
>
>
>
>
adap-tive &#64257;lter that attempts to minimize the following cost function:
> J(n)=E{|e^2(n)|}.         e(n)<1
>     =E{|e^3(n)|}.         e(n)>=1
>

Ankita,
Sounds like a homework problem. You have a cost function you want to minimize. Think
about what process you can use to tell if you have a minimum or not (hint: there's a
reason that E[e^2] is widely used). Expand the cost function, apply the process to
the expansion, and then see if that doesn't lead you to the answer.
```
```On Friday, October 13, 2017 at 7:34:30 PM UTC-5, ankita bombatkar wrote:
> Can anybody provide me the solution for following problem. It will be gre=
at help.
>=20
>=20
>=20
>=20
ent adap-tive =EF=AC=81lter that attempts to minimize the following cost fu=
nction:
> J(n)=3DE{|e^2(n)|}.         e(n)<1
>     =3DE{|e^3(n)|}.         e(n)>=3D1
>=20