MaplePrimes Questions

I have a differential that I'm solving using rk4 on maple and I want to plot the resaulting points in an interval. How do I do that?

here is what I've already done:

> f := {y(0) = 0, diff(y(x), x) = cos(5*y(x))-x};

> p := dsolve(f, y(x), numeric, method = classical[rk4], stepsize = .1);
proc(x_classical)  ...  end;

> for i from 0 by .1 to 3 do p(i) end do;
           ...

scatter2d  quantile2 scatter1d is removed?


with(stats): with(statplots): with(transform):
with(random): with(describe): with(plots):
datax:=[normald[5,1](100)]:
datay:=[normald[7,3](100)]:
scatter2d(datax,datay);
quantile2(datax,datay);
scatter1d(datax);
scatter1d[jittered](datax);

who(things) replace it?

i have a systems of differential equation:

J[n]=2*A[n]

S[n+1]=J[n]

A[n+1]=S[n] + 0.5*A[n]

with initial condition A[0]=10, J[0]=30, S[0]=5

i have a had time writing a procedure for this systems. help please

do i need a for command for this procedure

Can you divide 2 polynomials with Real coeffs.   eg 1.87x3-2x2+5.789x- 3,2 by    1.5 x2+2x-1.4 to get the quotient and remainder? If so how?

hello
my duty variational iteration method for solving nonlinear equations with maple code need finding.
I looked but I could not google
please help me

Hello,

Suppose that S1,S2,S3 are 3 blocks of a matrix S := Matrix(...). I would like to do

 

out := ArrayTools:-Concatenate(2,convert(S1,vector),convert(S2,vector),convert(S3,vector)):

but in the case when I have n blocks.

 

Thanks,

Dimitar

given : A(n+1)=2*A(n) , A(0)=70

write a procedure and find A(5)=?

> dsol1 := dsolve({-(diff(y[1](t), t, t))*sqrt(y[1](t)^2+y[2](t)^2)^3/y[1](t) = 0, -(diff(y[2](t), t, t))*sqrt(y[1](t)^2+y[2](t)^2)^3/y[1](t) = 0, y[1](0) = 1, y[2](0) = 0, (D(y[1]))(0) = 0, (D(y[2]))(0) = 1});                             dsol1:= >

Why the result can't execute?

I am aware of how to plot the feasible region defined by a system of linear inequalities (inequal in the plots package). Also, I can use the implicitplot command to plot the feasible region defined by a single nonlinear inequality. My question is, how do I plot the feasible region defined by a system of nonlinear inequalities. For example, how would a graph the region satisfying x>=0, y<=exp(-x), and y>=x^2?

i stroe the x coordinate in arry A, and y in arry B

for example

A:=araat([x1,x2..,xn])

B:=ayaay([y1,y2..,yn])

how can i plot this data,

i had tried the follows expression:

plot(x,y)  or plot(x[i],y[i],i=1..n)

but they all return the wrong answer, why?

given a recursive sequence : J(n)=b*A(n)  for b=0.5 , A(0)=70% , n is integer

wrote a procedure to find J(n), for example: find J(5)=?

 

i need help with this please .

I hope someone can help me.

I'm trying to integrate the following equation:

sin(v))*sqrt(cos(t)^2+4*sin(v)*sin(t)*cos(v)*cos(t)*sin(w)+4*cos(v)^2-cos(w)^2*cos(t)^2+cos(t)^2*cos(v)^2*cos(w)^2-5*cos(t)^2*cos(v)^2)

The boundaries are
v=0..1/2*Pi
w=0..2*Pi

 

I've tried evalf and simplify, but none of those worked. Does someone know how to solve this one?

Hello,

Can someone explain to me why when "x:=vector(2):" is used in the code below, the file "test_file.c" is generated correctly, while when "x := Vector(2,symbol=v):" is used, there is an error:

Error, (in codegen/makestat) symbol or symbol::type or symbol:=expression expected in parameter list

-------------------------------------------------------------

with(LinearAlgebra):
with(codegen, C, makeproc):

#x := Vector(2,symbol=v):

I'm creating a table of random math problems for my daughter to print out.  How do I get more columns?

a := rand(1 .. 15):
b := ["+", "-", "x", "/"]:

for i to 15 do
  print(cat(a(),b[rand(1..nops(b))()],a(),"_____")):
  print(``):
end do;

                                  13x4_____

I have written a 20-page program created on Maple 14 Classic Worksheet that generates holding patterns in crosswinds.  The program requires about 10 input values.  Can this be migrated to an Ipad or accessed from an Ipad?

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