MaplePrimes Questions

 

As you can see on the picture, the numeric formatting is set to enginnering with 3 decimals, but it is now separated with a comma, so when I copy this answer to further calculate something, it will read it as a list, and it will give an error.

I have no Idea how this suddenly changed, its usually a period and there is no problem.

This is probably an asy fix, but I can't find any options for this.

Im running windows 10, and Im in Denmark.

Hello dears! Hope all you are fine. I am facing problem to integrate some expression please see the attachment and fix the problem. I am very thankful for your favour. 

Integration.mw

Mob #: 0086-13001903838

I want to solve the equation

sqrt(x)+sqrt(-x^2+1) = sqrt(-4*x^2-3*x+2)

in Real domain. I tried

RealDomain:-solve(sqrt(x)+sqrt(-x^2+1) = sqrt(-4*x^2-3*x+2), x);

and I got -5/9+(1/9)*sqrt(34).

But, with Mathematica, I posted my question at http://mathematica.stackexchange.com/questions/51316/how-can-i-get-the-exact-real-solution-of-this-equation

Mathematica had two solutions 

x ==-1-Sqrt[2]|| x ==1/9(-5+Sqrt[34])

If I understand correctly, when Maple solve in RealDomain of this equation, the solution of equation must satisfy conditions x>=0 and -x^2+1 >=0 and -4*x^2-3*x+2 >=0. Therefore, the number

x ==-1-Sqrt[2] 

is not a solution. My question is the given equation has one solution (Maple) or two solutions (Mathematica)?

How integrate this function 

``

int((1/2)/(s^(1/2)*GAMMA(1/2)*(t^(1/2)-s^(1/2)))*(s^6), s = 0 .. t);

signum(t)^6*infinity

(1)

``

``

Thank you for helpping

Download qu_integral.mwqu_integral.mw


Dear All,

I use Maple T.A. 10. I try to use StringTools[Search] in algorithm variables but have not succeeded. Any help would be appreciated.

Algorithm Variable definitions

$pattern1=maple('"sin(1/2*Pi)"');
$text1=maple('"sin(1/2*Pi)"');
$test1=maple("StringTools[Search]($pattern1,$text1)");
$test2=maple('StringTools[Search]($pattern1,$text1)');

give us the following result, whereas I expect the return value 1.

pattern1 "sin(1/2*Pi)"
text1 "sin(1/2*Pi)"
test1 com.maplesoft.server.router.MapleSyntaxException: on line 116, syntax error, `,` unexpected:
test2 module () local Testing, Bitmap, BF, SuffixArray, LyndonFactorPositions, CheckMaximalRepeat, slowLyndonFactors, SerialCorrelationCoefficient, ChiSquared, LongestCommonSubSequenceLength, PrintSentences, `difficult?`, matchMatrix2, _randperm, _permute, _config, trampoline, Sequitur, passign, defun, compressImpl, uncompressImpl; export Length, IsUpper, IsLower, IsAlpha, IsDigit, IsAlphaNumeric, IsControlCharacter, IsSpace, IsPunctuation, IsGraphic, IsIdentifier, IsIdentifier1, IsPrintable, IsASCII, IsHexDigit, IsOctalDigit, IsBinaryDigit, IsVowel, HasUpper, HasLower, HasAlpha, HasDigit, HasAlphaNumeric, HasControlCharacter, HasSpace, HasPunctuation, HasGraphic, HasIdentifier, HasIdentifier1, HasPrintable, HasASCII, HasHexDigit, HasOctalDigit, HasBinaryDigit, HasVowel, Has, ExpandCharacterClass, Random, Randomize, IndexOfCoincidence, Entropy, ArithmeticMean, Kasiski, Repeats, Explode, Implode, Chop, Chomp, Fence, MatchFence, PadLeft, PadRight, Centre, Center, Trim, TrimRight, TrimLeft, Squeeze, DeleteSpace, Reverse, Insert, Delete, IsPrefix, IsSuffix, CommonPrefix, CommonSuffix, LongestCommonSubString, LongestCommonSubSequence, Soundex, Metaphone, Levenshtein, HammingDistance, EditDistance, PrefixDistance, SuffixDistance, DifferencePositions, Compare, CompareCI, CamelCase, UpperCase, LowerCase, OtherCase, Capitalize, FirstFromLeft, FirstFromRight, Take, Drop, Snarf, CharacterMap, LeftFold, RightFold, Map, AndMap, OrMap, Char, Ord, SubString, Select, Remove, SelectRemove, Group, Split, CaseSplit, LengthSplit, StringSplit, Readability, Sentences, Words, WordStart, WordEnd, WordContaining, NGrams, SimilarityCoefficient, WordCount, Join, CaseJoin, RegMatch, RegSub, RegSubs, RegSplit, ApproximateSearch, ApproximateSearchAll, HammingSearch, HammingSearchAll, Search, SearchAll, Substitute, SubstituteAll, PatternDictionary, FormatMessage, FormatTime, ParseTime, Fill, Repeat, Iota, Visible, Escape, Encode, Decode, Compress, Uncompress, WildcardMatch, NumbOccur, CountCharacterOccurrences, Shift, Rotate, Exchange, Stem, Permute, SortPermutation, Sort, Unique, Hash, IsSorted, IsAnagram, Anagrams, SyllableLength, Generate, NthWord, Support, IsBalanced, IsSubSequence, IsPalindrome, IsEodermdrome, IsPermutation, IsDerangement, IsMonotonic, IsPrimitive, PrimitiveRoot, Border, BorderLength, BorderArray, Overlap, IsConjugate, MinimumConjugate, Period, IsPeriod, Fibonacci, ThueMorse, MonotonicFactors, LyndonFactors, LexOrder, ShortLexOrder, RevLexOrder, ShortRevLexOrder, LeftRecursivePathOrder, RightRecursivePathOrder, ToByteArray, FromByteArray, CharacterFrequencies, MaximalPalindromicSubstring, MinChar, MaxChar, Tabulate, StringBuffer, ExpandTabs, WrapText, Indent, PatternEquivalent, PatternCanonicalForm, GenerateIdentifier, _pexports; options package, noimplicit, `Copyright (c) Maplesoft, a division of Waterloo Maple Inc. 2005`; description "a package of string manipulation utilities"; end module(Search)("sin(1/2*Pi)","sin(1/2*Pi)")
   

I confirmed that one can use StringTools[Search] in the question source code as explained in http://www.maplesoft.com/support/help/MapleTA10/MapleTAInstructor/ch06s04.aspx#Chapter06_UsingMapleCodetoPreventCheatinginMapleSyntaxQuestions

maple=evalb(0=StringTools[Search]("factor","$RESPONSE")) and evalb($RESPONSE=factor(x^2-1))

I note that searchtext or SearchText procedures could be used instead in algorithm variables.

How I can sketch a line with equation (x-2)/3 = (y-1)/4 = (z-3)/3 in three dimentional space?

Hi experts,

attached the following code,, but i dont know what is the wrong with it, looking forward for helpful advise.

dsys :={diff(u(t),t)=-(N1+M*cos(2*I*omega*t))*u(t)-1+v(t)*exp(-2*I*omega*t)+w(t)*exp(2*I*omega*t), diff(v(t),t)=-(N1+I*Delta-2*M*exp(2*I*omega*t))*v(t)-(N1+u(t))*exp(2*I*omega*t)-2*M, diff(w(t),t)=-(N1-I*Delta-2*M*exp(-2*I*omega*t))*w(t)-(N1+u(t))*exp(-2*I*omega*t)-2*M}:
res:=dsolve(dsys union {u(0)=-1,v(0)=0,w(0)=0},numeric,output=listprocedure,maxfun=0):
plots[odeplot](res,[[t,(Re(w(t)))]],0..10,axes=boxed,titlefont=[SYMBOL,14],font=[1,1,18],color=black,linestyle=1,tickmarks=[3, 4],font=[1,1,14],thickness=2,titlefont=[SYMBOL,12]);
Warning, computation interrupted

Consider the following two functions:

f := (theta) -> (x) -> theta*x;
g := unapply(unapply(theta*x,x),theta);

I would have expected f and g to behave identically. Apparently I am wrong, though:

f(phi)(x),
g(phi)(x);

But why? If the functions were alternatively defined as

f := (theta,x) -> theta*x;
g := unapply(theta*x,theta,x);

using unapply only once, then they would behave identically. But that is not quite what I want: I would like to have parameter-valued procedures of a single parameter, not (parameter-less) procedures of two parameters.

Hi,

Can anyone please suggest a way to set the zoom factor for a 3D plot from the plot commands or using DocumentTools or in some other way that doesn't involve the interactive tools?

What I'm trying to achieve is the following:

I'm developing MapleCloud worksheets for a course I'm teaching and want to give my students several 3D plots to interact with through their web browser.  When I make the plots, Maple determines the scaling so that boxed axes with labels will fit in the area of the plot component.  However, I'm making plots with axes=none that look better at a higher zoom factor (the corners of the unseen boxed axes would be out of the plot area but all the plot components still fit) and I'm keen to create the plots that look like this if possible.

My ideal solution would be for there to be a zoomfactor option for the plots[display] command or to be able to use some code like SetProperty("Plot0",zoomfactor,1.25) but I haven't been able to find a way to achieve this.  The closest I found was setting the viewpoint option, but that locked the view, preventing rotation, and I want to just set the initial view.  Is there some other method I haven't found?

Thank you for your help,

Alex

 

 

Hello,

In order to improve the readability of a worksheet, I would like to insert in text lines the equations that I calculate after with a input maple.

Question:

Is it possible to add in a text line equations and symbols as we can make with Latex or MathType ? For example, i would be interested to write vectors in a text line.

Thank you for your help.

I get the maple result as a product and sum off terms

 

x= (a+b*c)/d

i want to convert it to

x= a/d+b*c/d

i try to use convert(x,?)  

 

I am trying to find a general solution to the 1D-wave equation

Eq1:=diff(u(x,t),t$2)=diff(u(x,t),x$2);

pdsolve(Eq1,HINT=f(x)*g(t)); # Hinting pdsolve gives general solution using separation of variables

pdsolve({Eq1,u(x,0)=f(x),D[2](u)(x,0)=g(x)}); # without HINT and using intial conditions, I get travelling wave solution

pdsolve({Eq1,u(x,0)=f(x),D[2](u)(x,0)=g(x)},HINT=f(x)*g(t)); # Now when I try to use hint and ICs both, pdsolve return nothing.

I want to use separation of variables to find solution to the wave equation.

Any comment?

Thanks

A := Vector([1, 2, 3])

solve(2*A = 5+x, {x})

 

can anyone help me why i am having proble to solve for x?

Thanks

 

It returns unevaluated.  The solution is x=-ln(3),y=0.  In fact it doesn't give a solution even if the solution is provided as the initial point.  The value of Digits doesn't seem to make a difference.

(Tested Maple 2015.2 Macintosh and Maple 2015.1 Linux)

Hello


I am new to maple. If i have a vector from 0 to 1000 every 10 step (in matlab it is sth like this x=0:10:1000) can anyone help me how to do this in maple?

thanks

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