MaplePrimes Questions

hey guys ,

 

i have problem to obtain roots for a higher order equation

 

thanks for your helppp.mw

If there is a list

[[1,2],[2,2],[3,3]...

how to use correlate function?

assume [1,2] and [2,1] count as 2 

when find correlation between 1and 2

and how about 

if [1,2] and [2,1] are different

first position as key

means 1 relate with 2 count as 1 case for 1 only

[2,1] count as 1 case for 2 only

 

How do I check if there are any solutions to this equation:
1/(u+v)^2+4*u*v-1=0
where both u and v are real numbers larger than 0.

on what grounds do posts get deleted from this website? like i just dont see the problem if its non offensive and math related to be honest it just seems a bit ridiculous to regulate content to that extent

Hi, my question is concerning a "summand counting function" i require ie suppose for the following input

of [a+b+c,a+b,a+b+c+d,a] mapping this function will produce the output [3,2,4,1]

Hi Maple Users

I am trying to use GRADIENT (with(codegen)) with a proc that includes hypergeom function but it produces the following error:

Error, (in GRAD/givedname) incorrect syntax in parse: unexpected end of input (near 4th character of parsed string)

When I remove the bits including hepergeom function it works so there seems to be some parsing problem with hypergeom. The proc is below ( I have simplified the code by assignig values to some variables). Any help is appreciated.

OV := proc(d1, d2, o)
    local noc, lambda1, lambda2, nu1, nu2, z1, z2, a1, a2, p1, p2, x1, x2, Be1, Be2, q1, q2, w1, w2, aprime, zprime, nx, nBe;
    local hg1, hg2, hg3, hg4;
       
    lambda1 := 5.22;
    lambda2 := 2.36;
    nu1 := 12.96;
    nu2 := 4.23;
    z1 := 4.99;
    z2 := 1.43;
    
    a1 := lambda1 * nu1;
    a2 := lambda2 * nu2;
    
    p1 := 1;
    p2 := 1;


    x1 := exp(a1/z1 + lnGAMMA(d1/z1 + 1) - d1/z1 * ln(a1/z1));
    x2 := exp(a2/z2 + lnGAMMA(d2/z2 + 1) - d2/z2 * ln(a2/z2));
    
    Be1 := 1 / (GAMMA(d1/z1 + 1, a1/z1) * x1 / GAMMA(d1/z1 + 1));
    Be2 := 1 / (GAMMA(d2/z2 + 1, a2/z2) * x2 / GAMMA(d2/z2 + 1));
    
    q1 := lambda1 * nu1 * Be1;
    q2 := lambda2 * nu2 * Be2;
        
     hg1 := hypergeom([p1, -d1 / z1 + 1 , a1 / z1 + p1 + 1], [a1 / z1 + p1], -z1 / a1);
     hg2 := hypergeom([-d1 / z1 + 1, p1 + 1, a1 / z1 + p1 + 2], [a1 / z1 + p1 + 1], -z1 / a1);
     hg3 := hypergeom([p2, -d2 / z2 + 1 , a2 / z2 + p2 + 1], [a2 / z2 + p2],-z2 / a2 );
     hg4 := hypergeom([-d2 / z2 + 1, p2 + 1, a2 / z2 + p2 + 2], [a2 / z2 + p2 + 1], -z2 / a2);
     
    w1 := z1 - q1 + a1 * (a1 + p1 * z1) * hg1 / ((a1 + p1 * z1 + z1) * p1 * hg2 );
                    
    w2 := z2 - q2 + a2 * (a2 + p2 * z2) * hg3 / ((a2 + p2 * z2 + z2) * p2 * hg4 );
    
    aprime := q1 + q2;
    zprime := (w1 * q1 + w2 * q2) / aprime;

    nx := exp(aprime/zprime + lnGAMMA(o/zprime + 1) - o/zprime * ln(aprime/zprime));
    nBe := 1 / (GAMMA(o/zprime + 1, aprime/zprime) * nx / GAMMA(o/zprime + 1));
          
end proc:

GRADIENT(OV);

 

How to convert "123" into integer 123

i use sprintf %d still can not convert to integer

Hi,

I would like to plot the region of solution of the following system defined by some equations.

restart; with(Optimization);
with(plots);

inequal({-5 <= 4*y1+2*y2+3*y3, -2 <= 3*y1+5*y2+2*y3, -1 <= y1+2*y2+y3, 0 <= y2, y1 <= 0}, {y1, y2, y3}, color = "Nautical 1");

Many thanks for any help

I have the following Polynomial F. Computing the genus shows that this curve has negative genus and thus is reducible. But using AFactor doesn't produce a factorization. Any ideas?

with(algcurves):
F := z^9+(-3/2+(3/2*I)*sqrt(3))*y^3*z^6+(-3/2-(3/2*I)*sqrt(3))*x^3*z^6+(-3/2-(3/2*I)*sqrt(3))*y^6*z^3+(-3/2+(3/2*I)*sqrt(3))*x^6*z^3+y^9+(-3/2-(3/2*I)*sqrt(3))*x^3*y^6+(-3/2+(3/2*I)*sqrt(3))*x^6*y^3+x^9-3*(x*y*z)^3:
z:=1:
genus(F, x, y);
evala(AFactors(F));

Pls what is the maple code for the fourth order Runge-kutta method for five systems of ODE of several variables?

I want to be able to make arrows on my axis to indicate positive direction, since it is a requirement at my school. I would like to do it with the "plots" function.

Here is what I wish I had in maple http://imgur.com/a/OXi5t

 

 

Hi Mapleprimes,,,


We see Maple file.

 

We are aware of oeis.org/A103435/


sequence data

0 2
1 4
2 16
3 48
4 160
5 512
6 1664
7 5376
8 17408
9 56320
10 182272
11 589824
12 1908736
13 6176768
14 19988480
15 64684032
16 209321984
b103435

 

Where F(m)=2*F(m-1)+4*F(m-2).


Goal - to increase refereed database.

 

M.mw

Regards,

Matthew Charles Anderson

Legislative Assistant

Oregon USA

Age 42.

5*x-7 = 3*x+2;
                             "(->)"
lhs(5*x-7 = 3*x+2) - rhs(5*x-7 = 3*x+2) = 0;
                          2 x - 9 = 0
                              [x]
isolate( 2*x-9 = 0, %ARG1 );
Error, (in isolate) 2*x-9 = 0 does not contain %ARG1
plz explain me what is this error?

If input a group of outputs which are binary numbers

can it simplify to give a logic that can output these outputs

If input ["1","1","2","2","2","77"]

output a graph such as

1 has 2 times

2 has 3 times

77 has 1 time

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