I am trying to solve a tricky system of diff eq....can somebody point me in the right direction, the error message is involved with the initial conditions..

how do i add more buttons into my maplets

I have 2 column vectors I am trying to plot against each other. The vertical axis needs to be logarithmic.

If I say

plot(mass,map(log,pressure),style=point);

it works and I get all 19 points.

If I say

logplot(mass,pressure);

I get the correct scales in both directions (so nothing would be cut-off) but it plots only 4 points.The same happens if I use plot(...,axis[2]=[mode=log]);

The pressure values range from 1E-7 to 1E-12....

how do i write this procedure in maplet. 

Hello, 

I am trying to solve a simple equation 

x(0.0178){tan([2.10^-5](x)^0.5)}^2=+2.32.10^12-x, which I want to be solved over the range 1.10^10......2.10^12.

I have tried the following program (which I have got help on):

restart; 

eq := x(0.0178)*tan²(Sqrt(x)*2E-5) = 2.32e12-x;

Hi all,

I have a function which Maple is happy to integrate from -100 μm to +100 μm,  but won't do between -60 μm and 100 μm.  Screenshot here:

 http://oi39.tinypic.com/34jdif9.jpg

The graph of the function reveals no obvious reason why it shouldn't be able to integrate from +infinity to -infinity (which I'd like to be able to do) and everything in between:

Hi everyone.

I have a system of differential equations with some parameters, and I need to numerically solve for several values of these. How can I do it in a simpler way than solving the system everytime declaring different values for the parameters?

And I need plots and quantities depending on the solution of the system.

Hope I made myself clear.

PS: It's maple 14 by the way.

Using the same post for a different question, also related:

How to solve the  partial derivative at a specified point

The latex code is

f(x,y)=x+(y-1)\arcsin\sqrt{\frac{\,x}{y}}

f''_{xx}(x,1)

Hi,

Is it possible in maple to estimate a density using my own kernel function (Gamma; Beta, Exponential...) instead of the  default kernels ( 'gaussian', biweight, epanechnikov, triangular, rectangular)?

Hallo,
I have to estimate a logistic growth function, with the functional form
f(t)=A/(B+exp(-k*t))
The dataset is given by

X:=[1950,1960,1970,1980,1990,2000,2010];

which describes the values of t
and by

Y:=[2.53,2.76,3.12,3.75,4.2,4.3,4.35];

which describes the values of f(t).
I now have to estimate the values of A,B and k.
I tried NonlinearFit by

with(Statistics):
NonlinearFit(A/(B+exp(-k*t)),X,Y,t);

What do these parameters of Clutch mean,phi_nominal,w_small,k_locked?

And, how can I use them?

Anyone can tell me the detail?

Thank you.

I have something like E1:=y=x*b+z*a+c*i. and i want to solve for y/i. I try doing solve(E1,y/i) but it says i cant solve for an expression. is there a way to get around that?

Hi all.

I want to make a graphical application for a webpage, showing curves with a certain number of points on X axis (about 10 or 15), and some sort of “handles” on curve values (for every curve,...

I have a set of test equations. I am substituting the coefficients of the variables A₁ ..A₄ and the constants in the equations. Most of this I have made work fine. There are 2 coefficients I cand make be substituted. In eq₁ k*d the coefficient of A₃ and eq₅ 3.1d² also the coeff of A₃ .Have tried subs and algsubs but can't make it work. The reason I want to do this is in reality I have 15 equations...

Hi all,

1.msim

I want to compare two signals with relational block in Maplesim, i.e. greater or equal

The output signal should be a pulsed signal which represents the intervals where one signal is greater or equal to the second signal

How to do this

Thanks