50g

im a noob to the hp50.... im switching over from a TI86, and im still
getting familiar with my cool new calculator

my problem is that when i type in semi-complicated integration's it
takes a long time to calculate it, if at all... while my friend's ti89
does it in an instant... do i have to update its functions list, or
unlock something...

Hi..

Can expand on this?? "semi-complicated integration's:..??

Walsh

--- In 50g@yahoogroups.com, "Juan" <jm_gar83@...> wrote:
>
> im a noob to the hp50.... im switching over from a TI86, and im still
> getting familiar with my cool new calculator
>
> my problem is that when i type in semi-complicated integration's it
> takes a long time to calculate it, if at all... while my friend's ti89
> does it in an instant... do i have to update its functions list, or
> unlock something...
>

it does simple integrations like x^2 or similar.

the intergartion that it cant, or has a hard time doing are similar to
1/(square root of x^2-16)

i do them in the Eq writer in RPN mode, but i tried in algebraic and
it does the same thing...

Thanks for the help

--- In 50g@yahoogroups.com, "walshingham2000" <walshingham2000@...> wrote:
>
>
> Hi..
>
> Can expand on this?? "semi-complicated integration's:..??
>
> Walsh
>
>
>
> --- In 50g@yahoogroups.com, "Juan" <jm_gar83@> wrote:
> >
> > im a noob to the hp50.... im switching over from a TI86, and im still
> > getting familiar with my cool new calculator
> >
> > my problem is that when i type in semi-complicated integration's it
> > takes a long time to calculate it, if at all... while my friend's ti89
> > does it in an instant... do i have to update its functions list, or
> > unlock something...
> >
>

> 1/(square root of x^2-16)

Works fine here.

Here is a little cut out from this quite nice discussion from a few
years back.

'1/(x^4-1)'
TI89: 0.278 s.
HP49G+: 1.100 s.

'1/(x^4+1)'
TI89: 3.010 s.
HP49G+: 2.348 s.

'1/(x^4-1)^4'
TI89: 26.127 s.
HP49G+: 4.154 s.

'1/(x^4+1)^4'
TI89: 114.205 s.
HP49G+: 3.414 s.

The point is, the calculators really use completely different methods
of solving integrals/derivatives. Both have problems with certain
kinds of problems. I'd recommend reading through this thread and you
will find lots of interesting things.

http://groups.google.com/group/comp.sys.hp48/browse_thread/thread/4e5d8b811066ba7f/

TW