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JoeImp
Enlightened
Active Member
Joined: 24 May 2003
Posts: 747
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 Posted: 04 Jun 2003 02:18:06 pm Post subject: |
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I think I know what you mean. You can make a program do this, but I'm not quite sure how, there's a program at Ticalc.org under Basic-Math progs called RadRed that does the trick, look through the source to get some ideas, but don't steal it!  |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 04 Jun 2003 02:23:56 pm Post subject: |
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| there is a prog to do it? aww, man, i could have used that last year! |
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SniperOfTheNight
Advanced Member
Joined: 24 May 2003
Posts: 260
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| Posted: 04 Jun 2003 02:38:16 pm Post subject: |
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I didn't think you could do that. I guess you could do that in basic, but I've never even though about doing that. It probably can be done, but we'll leave the answer up to Jbirk,David,or Justin  |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 04 Jun 2003 02:46:03 pm Post subject: |
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| ya, they seem to be the smart ones around here... |
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SniperOfTheNight
Advanced Member
Joined: 24 May 2003
Posts: 260
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| Posted: 04 Jun 2003 02:59:06 pm Post subject: |
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| Smarter,probably but not definetly. Better at programming,yes,definetly,no question about it. |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 04 Jun 2003 03:00:39 pm Post subject: |
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| ya, that's what i meant... i think they aut to make some big commercial program and sell it to get rich! |
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Jeremiah Walgren
General Operations Director
Know-It-All
Joined: 24 May 2003
Posts: 1937
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| Posted: 04 Jun 2003 03:29:22 pm Post subject: |
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| Hehe, the TI-89 automatically simplifies radicals for you, and it gives the answer in radicals as well. (Unless you tell it otherwise.) Really helps in some areas... |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 04 Jun 2003 04:20:46 pm Post subject: |
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We are not smarter, but we may appear that way sometimes because we have been know to spend up to 6 hours programming and finding things out.
Now, I wrote a basic program to do radicals before, but it was not great.
All it did was search using two for loops.
e.g.
for(A,1,20
for(b,1,20
if #=A(radical)B
then
;tell the user
end
end
end
That was about it.
# was the ans, so once you had an anser, you could run a program and pray you got a radical.
To tell you the truth, it worked only about 80% of the time and was much larger than the above because it intelligently guessed ranges, and had some string stuff to make the answer a string by converting reals to strings and alligning the string to the right. |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 04 Jun 2003 06:49:33 pm Post subject: |
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cool, so ur saying u made it really smartly guess :D
and u guys are pretty cool cause u know so much about the workings of a calculator! |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 05 Jun 2003 01:37:21 am Post subject: |
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What do you mean innerworkings?
TI-BASIC has nothing to do with the inner workings of the calculator unless you think of the parser as an assembly program executed by a CPU.
Even then, few think of the assembly that takes place when a basic program is running. |
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Arcane Wizard
`semi-hippie`
Super Elite (Last Title)
Joined: 02 Jun 2003
Posts: 8993
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| Posted: 05 Jun 2003 04:55:01 am Post subject: |
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| What are radicals ? |
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z_boy
Newbie
Joined: 04 Jun 2003
Posts: 2
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| Posted: 05 Jun 2003 02:20:33 pm Post subject: |
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| Radicals are a way to reduce square/cube/etc roots that would otherwise contain a decimal. Such as the square root of 8. With a radical it wouldf be 2 Sqaureroots of 2. because 4 * 2 = 8 and 4 can be sqaurerooted to 2. So the 2 from the 4 goes to the outside of the squareroot symbol and the remaining 2 (which can't be squarerooted without a decimal) stays on the inside of the suqare root. |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 06 Jun 2003 02:23:34 am Post subject: |
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It is also important to realize that radicals can be wrighten as exponents.
e.g.
Sqrt(4) is 4^(1/2)
Cuberoot(5)^2 is 5^(2/3)
I am going to move this to the TI-Basic Forum and make a link. |
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Arcane Wizard
`semi-hippie`
Super Elite (Last Title)
Joined: 02 Jun 2003
Posts: 8993
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| Posted: 06 Jun 2003 07:54:56 am Post subject: |
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Ah, thanks, guess we still have to get that subject at maths, already learned about the sqrt(4) = 4^.5 though.
Would it happen to be the same as ³(sqrtsign)( =2 or is it more like 2²*4=16, ie. 4 squareroots of 2=16 ? |
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62 52 53 53
Formerly known as 62 52 53 53
Active Member
Joined: 30 May 2003
Posts: 607
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| Posted: 06 Jun 2003 07:41:25 pm Post subject: |
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| four root two does not equal sixteen |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 07 Jun 2003 02:03:54 am Post subject: |
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4^2 = 16
16^(1/2) = 4
Last edited by Guest on 07 Jun 2003 02:04:14 am; edited 1 time in total |
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Xan
Newbie
Joined: 30 May 2003
Posts: 19
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| Posted: 07 Jun 2003 02:59:35 pm Post subject: |
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no:
sqrt(=sqrt(4*2)=sqrt(2²*2)=2*sqrt(2)  |
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Spyderbyte
Advanced Member
Joined: 29 May 2003
Posts: 372
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| Posted: 08 Jun 2003 12:03:17 am Post subject: |
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Omnicalc will simplify radicals for you, and I wrote a program that did it too.
Code:
ClrHome
"0123456789"üStr2
Input "simpÍð",C
Input "X=",D
For(B,int(DÍðC)+1,1,ú1
If C/B^D=int(C/B^D)
Then
BüA
prgmNUM2STR
If C/B^D=1
Then
Disp Str1
Stop
End
Str1+"*"üStr3
DüA
prgmNUM2STR
Str3+Str1+"Íð("üStr3
C/B^DüA
prgmNUM2STR
Str3+Str1+")"üStr3
Disp Str3
Stop
End
End
Which used Num2Str:
Code:
sub(Str2,10fPart(A/10)+1,1)üStr1
While 9÷A
int(A/10üA
sub(Str2,10fPart(A/10)+1,1)+Str1üStr1
End
Return
BTW, the divide sign (NOT the "/") means (less than or equal to), the dotted u means ->, and the accented I and weird o is the XSquareroot sign. Item 5 in the math menu.
I think it should all work, I haven't used it for a while and can't remember the details.
Hope this helps!
Spyderbyte |
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Jeffrey
Member
Joined: 12 Jun 2003
Posts: 212
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| Posted: 29 Jun 2003 09:35:47 pm Post subject: |
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| Oh, and a note, this doesnt ork for decimals! |
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