Hi

i need help

i want calculate the sum of digits after a comma

My function is f(t)=(4bcos(t)^3,4bsin(t)^3).

I need this function's lenght of ARC and fonction of lenght of ARC.  t=0.  Maybe i need this graphic. 

Please help me. Thank you...

I want to minimze VaR (the 5th percentile for the return distribution) with LP.
However, the way I have specified the problem does not work for some reason, why?


restart:
with(Optimization):
with(LinearAlgebra):

nstock := 20:
n := 15:

R := RandomMatrix(n, nstock, generator = -15 .. 15, outputoptions = [datatype = float[8]]):
W := Matrix(nstock, 1, [seq(w[i], i = 1 .. nstock)]):
data1 := Array(Multiply(R, W));

Hi. Solving a problem of non-linear oscilations of thin string I met a PDE with unusual bcs at the right side of the string: 
 , where phi is known function. Can...

Your worksheet may be incomplete"

Hi, I use maple 12 for mac, I have an exam at 9am, it's almost 3am and my whole exam notes (open "maple" exam, as opposed to open book) have just corrupted.

PLEASE HELP ME.. :(

2p81_final.mw

Download 2p81_final.mw

 

I am not quite sure wether this question belongs into this Forum but i will post it anyway (plz just give me a hint if i am wrong here).

In the Maple file i attached i wrote a solution for the Kepler-Problem(eq1) which i developed with Maple. I isolated r and simplified the result (eq2a).

However solutions from text book look a little different (it can be seen in Whatitshouldbe). I am sure that both functions are the same (i plotted both functions...

Hello

i want to simplify this expression (f@f@...@f@f)(x)

f is repeated "n" times

e.g: for n=3

we found (f@f@f)(x) .

help me please.

Hi,

I would like to calculate the inverse fourier transform from this: 

And I get this:

Hello! How i can write this expression in maple?

ma × (Ω' × a )

where is

Omega := Vector(3, [Omega1, Omega2, Omega3])

dT := proc (f) options operator, arrow; add((diff(f, var[k]))*dz[k], k = 1 .. N) end proc

a := Vector(3, {(1) = Ri*n1, (2) = n2*Ri, (3) = n3*Ri-R0})

f(t)=(cost,sint,cos2t)

I need necesary commands in order to draw to f( t)...'s tangent at t=pi/3. Could you help me

Hi

I'm solving a differential equation which has a boundary at infinity, when I add this third condition it returns nothing. Of course I it's easy to solve by hand but it should be done in a loop. can you give me a hint on this?

Thanks

Hi guys

i have a problem to drawing this function

problem is F(r,theta)=sin(6r) /6r   IF r is not 0

          and F(r,theta)=1               IF r is 0

Thanks for your helps 

Dear all

How to avoid in plot "matrix in singular" in my pde system

> a1 := -2;
                                     -2
> b1 := 3;
                                      3
> c1 := -1;
                                     -1
> L := 15;
                                     15
> b := .25;
                                    0.25
> th := 1.5;
                                     1.5
> pde := diff(u(x, t), x, x, x, x, t...

Hello .

I need your help please .

how can i solve this kind of equations like : 61*a^2+1=b^2

I would like to index Variable names like how it is common in physics (just as an addition to the variable name to distinct between say t_a and t_b just as two different times). However i am not sure how to do this and make maple treat for example t_a EXACTLY like if it would be called ta.

int(1/2*m*(-x[b]+x[a])^2/(-tb+ta)^2,t = ta .. tb)

is evaluated but

int(1/2*m*(-x[b]+x[a])^2/(-t[b]+t[a])^2,t = t[a] .. t[b])