Hi there,

In the attached PDF I have a system of 16 equations with 16 unknowns (the unknowns are a_i, b_i, c_i, d_i for all i = 1..4). The x_{ijkl} represent known (arbitrary) values. 

Can someone solve this system and tell me what the solutions are? If there is more than one solution, then I only want one solution. 

Thanks!

Qn.pdf

hello, i'm using maple, in order to draw a graphic in wich, different functions are plotted, 
these functions came from one with 4 variables, wich represents losses in a phenomenon (extraction) depending on diffenrent variables, so my objective is to varry only one parameter and then draw its curve, and this for each parameter ; i had 4 functions.

with(plots):

f1:=plot((n-1)/(-1+n*10^(6.77*((n-1)/n))), n=1.0537..1.2688):

f2:=plot(0.2365/(-1+1.2365*10^(0.0155*O)), O=76.42..99.92):...

I want to create a package.  I want to be able to load it using the usual with(Accellib); construct.

how can i do it?

hi,

how can i solve the following ode

u'' + 3.4/ (u(0.25)*2+u(0.16)+2) + uu'=0

boundary conditions   u(0)=a  , u(0.5)=b

a and b are constants. for example a=0.1 and b=1

hi

please help me to solve the following system of ODE

diff(u(eta), eta, eta)+.5699919300/(0.9930000000e-3+0.3883623000e-1*phi(eta)+.5301627000*phi(eta)^2)+1/(eta-1)+(0.3883623000e-1+1.060325400*phi(eta))*(diff(phi(eta), eta))*(diff(u(eta), eta))/(0.9930000000e-3+0.3883623000e-1*phi(eta)+.5301627000*phi(eta)^2) = 0;

diff(T(eta), eta, eta)+(5.05659*((-1.1752324*10^6*phi(eta)+4.1744724*10^6)*u(eta)/(int((1-eta)*(-1.1752324*10^6*phi(eta)+4.1744724*10^6)*u(eta), eta = 0 .. .5))+7.47*(diff(phi(eta), eta))/(1+7.47*phi[0])-(.1977617327*(.597+4.45959*phi(eta)))*(diff(T(eta), eta))/(1-eta)))/(.597+4.45959*phi(eta))=0;

diff(phi(eta), eta)-5.000000000*phi(eta)*(diff(T(eta), eta)) = 0;

with following boundary condition

u(0)=0,u(0.5)=0,phi(0)=1,T(0)=0,D(T)(0)=0

thanks for your attention in advance

hey firends please help me for the following matrix code in maple for m x m order and for m x 1 order

Hi,

I want to check this inequality (check below) for the set of parameters that holds, and I also want to restrict my variable to be real and non-negative (i.e k>=0), I am getting the usual message that "Solutions may have being lost". Can somebody please help me on how i can handle this ? Thanks 

alpha*beta*(1-alpha)*k^(alpha-1)/(1+beta)-1-(2*alpha-1)*alpha*(1-alpha)*beta*k^(2*(alpha-1))/(1+beta)+alpha^2*k^(alpha-1)

Hi,

I obtain  curve pH = f(Vb) with following code

restart;with(plots);

 Vtot := V0+Vb+Vind;h := 10^(-ph);C0 := 10^(-2);Cind := .83;Vind := 0.1e-1;V0 := 10;Ka1 := 10^(-4.8);Ka2 := 10^(-9);Cb := 0.1e-1;Kaind := 10^(-8);

eq := h+Cb*Vb/Vtot = 10^(-14)/h+C0*V0/(Vtot*(1+h/Ka1))+Cind*Vind/(Vtot*(1+h/Kaind));

 implicitplot(eq, Vb = 0 .. 40, gridrefine = 3, ph...

Hello,

I installed Maple 17 on Slackware Linux 14.0 today and everything seems to work except that when I want to search for something through Maple Help my mouse doesn't seem to activate the text search field. Is this happening with anyone else or is this just because I am running under Slackware?

Thanks,

Jovan

hi

I have some equations like these:

Hi,

I obtain  curve pH = f(Vb) with following code but now, i would have tangent for two points near Veq. I don't know the procedure with implicitplot.

I think the best way is to attribute the points to a function but dn't know how to do

restart;with(plots);

 Vtot := V0+Vb+Vind;h := 10^(-ph);C0 := 10^(-2);Cind := .83;Vind := 0.1e-1;V0 := 10;Ka1 := 10^(-4.8);Ka2 := 10^(-9);Cb := 0.1e-1;Kaind := 10^(-8);

eq := h+Cb*Vb/Vtot = 10^(-14...

i have 6 non linear diff equation. for the quad copter i want to get its state space representation and its done in a master  but they didnot say how they did it ???

soo any one can help me?

i had 3 nonlinear equations and i want to convert them to the form of multiplications of a MATRIX in a VECTOR, but none of these two methods give me the right answer,what should i do?

#method one#

restart:
with(LinearAlgebra):
eq1:=a[1]+a[2]*a[3]^2*a[1]+a[2]*a[3]-a[1]^2:
eq2:=a[3]+a[1]^3+a[2]*a[3]+a[2]^2-a[1]^2:
eq3:=a[1]^3+a[2]^3+a[1]*a[2]*a[3]+a[1]*a[2]-a[3]:
for i to 3 do
B || i := eq || i ; K || i := Vector[row](3):
for j to 3 do

Hi,

I found the plotted phase portrait strange and i verified it with phaseportrait

With plot :

Dear guys!

I have two expressions in terms of one variable. For example A(t) and B(t). Now, I want to plot A in terms of B. What should I do?

I cannot obtain this relation analytically because both expressions in terms of "t" are very complicated. But I can plot both of them. Now, I need to plot A in terms of B.

Thanks a lot.