Description:
Hewlett-Packard's HP48 and HP28 calculators.
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Numerical Diff. EQ. Solver not working.
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I'm probably doing something wrong, but I wanted to test out an equation in the solver under NUM.SLV>diff eq.
I entered my equation on the top '2*X^2+Y^3'
indep: X init:1 Final:2
Soln: Y init:2 Final:
Tol:.0001 Step:dflt When I hit solve, it sat there for several minutes before I stopped. It was thinking the whole time but I'm not sure what it was doing. I was just wondering if this was a bug or if I forgot to set a flag correctly. Also, if I enter step:1 would it give me a solution as if I had use Euler's method?... more »
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Recording calc commands (like macro, but editable)
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In excel vba, when we record a macro, the vba code gets recorded and
we can go back and edit it later using program editor to further
customize the program. This is a fantastic way for quickly/
effectively generating a program imo because it allows us to use the
native (excel) environment in the way we are used to with immediate... more »
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RPL+ news
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I've spent more hours than I care to think about on designing and
implementing RPL+ last year.
For the first time since inception, the documentation has caught up
with the implementation...
If you're interested, here're three links:
RPL+ for RPL Users: [link]... more »
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Getting a 1..100 vector
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Does someone see a better way to get a vector [1..100] than using one
of these snippets?
≪ ≪i≫ 'i' 1 100 1 SEQ AXL ≫
≪ { 100 } 0 CON 1 AXL ≪ DROP NSUB ≫ DOSUBS AXL ≫
Thanks.
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hp50g left arrow key
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The up, down, and right arrow keys on my 50g work well. In edit mode,
an arrow key closure moves the cursor 1 position first time every
time.
The left arrow key did not feel different but the operation was
erratic. A key closure might or might not move the cursor.
Opening the case was beyond my ability.... more »
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Very Huge collection of Solutions Manuals & Test Banks
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Hello,
We would like to inform you that we have updated our list with the
following new titles.
You can contact us directly at Student.p24(at)Hotmail(dot)com .
If the title you are looking for is not listed, do not hesitate to
contact us,
we will try to help.
==========
2011 Federal Taxation, 5th Edition 2011, Pratt.Kulsrud, Instructor... more »
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How to transfer formulas from HP 50g to Matlab?
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I did some symbolic calculations using inverse Laplace transform. I've
got a function that describes how a circuit works and now I want to
enter it into Matlab to do numeric calculations and to build graphs.
The problem is that my function is very big and if I enter it manually
I can make too many errors. So the question is how can I transfer a... more »
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MSLV input
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From the CAS help and HLP49, MSLV accepts an input like this:
3: [ 'EQ1' 'EQ2' .. ] n equations
2: [ 'var1' 'var2' .. ] n unknowns
1: [ var1guess var2guess .. ] initial guesses for the aforementioned
variables
Given Rouche-Capelli conditions are satisfied,problem is converging,a
solution exists and the guesses are in a converging zone,it converges.... more »
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Variable substitution within n matrices
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I needed a program to read a few 3x3 matrices containing
variables,like N and T.
N and T are stored in the same directory; when invoking the program
(SOST) the newer N and T are present on stack levels 1 and 2.I solved
it with ->NUM in this program,but was there another(better) way to do
it?is SUBST helpful?... more »
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