Hello all,
I am having troubles finding the root of the following equation:
\[0.05=\frac{x\times coth(x)  1}{10x\times coth(10x)  1}\]
to which I created the following program:
Code:
LBL 01
#10
*
ENTER
TANH
/
1

x<>y
ENTER
TANH
/
1

x<>y
/
#005
#100
/

END
1
5
SLV 01
The 34s will complain there is a domain error.
Hope I am missing something.
Thanks
Marcio
EDIT: Found the error. Problem solved!
(06292015 01:09 AM)Marcio Wrote: [ > ]EDIT: Found the error. Problem solved!
It would be interesting for others to know what went wrong and how you fixed it.
(06292015 01:09 AM)Marcio Wrote: [ > ]Hello all,
I am having troubles finding the root of the following equation:
\[0.05=\frac{x\times coth(x)  1}{10x\times coth(10x)  1}\]
to which I created the following program:
Code:
LBL 01
#10
*
ENTER
TANH
/
1

x<>y
ENTER
TANH
/
1

x<>y
/
#005
#100
/

END
1
5
SLV 01
The 34s will complain there is a domain error.
Hope I am missing something.
Thanks
Marcio
EDIT: Found the error. Problem solved!
You could save a few steps:
Code:
LBL 01
XEQ 00
X<>Y
SDL 001
ENTER
XEQ 00
/
#005
SDR002

RTN
LBL 00
TANH
/
1

END
(06292015 07:37 AM)Marcus von Cube Wrote: [ > ] (06292015 01:09 AM)Marcio Wrote: [ > ]EDIT: Found the error. Problem solved!
It would be interesting for others to know what went wrong and how you fixed it.
The 34s complained because the first guess I entered was zero.
(06292015 11:06 AM)RMollov Wrote: [ > ]You could save a few steps:
Code:
LBL 01
XEQ 00
X<>Y
SDL 001
ENTER
XEQ 00
/
#005
SDR002

RTN
LBL 00
TANH
/
1

END
Yes, much shorter. Thanks.
(06292015 11:23 AM)Marcio Wrote: [ > ]Yes, much shorter. Thanks.
Both shorter
and faster, using the some special 34s features:
Code:
LBL 01
TANH
/
DEC X
X<> Y
SDL 001
ENTER
TANH
/
DEC X
/
#005
SDR 002

END
1 [ENTER] 5 [SLV] 01
=> 1,64561382716
Dieter
Indeed. Faster than the solver of the 35s too.
Code:
LBL 1
1
0
*
ENTER
TANH
/
1

x<>y
ENTER
TANH
/
1

x<>y
/
0
.
0
5
/

END
Gentlemen,
I have been trying to solve this equation for X using the 15C but it is not working.
Anyway, the code above will make the 15C output 0.0389, which is not correct. Could you identify what I am missing here?
Please note that there has been no attempt to optimize the given code.
Very much appreciated.
Marcio
Marcio Wrote: [ > ]Could you identify what I am missing here?
Just remove the last "/", before the "".
(08052015 03:48 AM)Didier Lachieze Wrote: [ > ]Marcio Wrote: [ > ]Could you identify what I am missing here?
Just remove the last "/", before the "".
Oh yes, I forgot to remove that extra /. Thanks.