How to compute the integral: int((c-x)/x)^n,x=a..c) ?

This integral is an incomplete beta function and could be expressed in terms of hypergeometric function, but my Maple refuse to deal is. Pleas help

Hello

pl explain me how to find a and b in this eqation

a^x + b^y = 1,

were a= 5 and b= 8 

thanks

I want to invlaplace the following complex expression that I call PQ.

>PQ:=(cosh((1/2)*eta*sqrt(C3^2+4*C1*s))*sqrt(C3^2+4*C1*s)+sinh((1/2)*eta*sqrt(C3^2+4*C1*s))*C3)*(cosh((1/2)*eta*C3)-sinh((1/2)*eta*C3))*(-cosh(C4)-sinh(C4)+s)/(s^2*(-sinh((1/2)*C3)+cosh((1/2)*C3))*(sinh((1/2)*sqrt(C3^2+4*C1*s))*C3+sqrt(C3^2+4*C1*s)*cosh((1/2)*sqrt(C3^2+4*C1*s))))

where C1 C3 C4 eta are constant .

Then I do like this

>invlaplace(PQ)

But I got

When solving a ODE system, I get "the lenght of the output exceeds the limit of 100000". This was expected so, it is OK with me. However, I would like to be able to see part of the output. Then, I can start making susbtitutions (algsubs) and shrink the output. So, how can I print just a few lines of the output?

what is the difference between using DEtools forexample bernoullisol and dsolve directly?

I have a maple document with a few dozen plots. I am using the code

plotsetup(ps,plotoutput="C:\\plot.eps"); plot(x^2,x=-1..1); plotsetup(window);

to save the plot as an eps file. Is it possible to alter this code to save the file as a pdf? I've tried changing ps to pdf, but this doesn't seem to work. Thanks!

Is it possible to print an asterisk in a superscript? For example, the plot

plot(x^2,x=-1..1,tickmarks=[[1/2=x^*],[1='a']]);

has  at the tickmark x=1/2, but I'd like it to be x^*. 

Thanks!

Is it possible for tickmarks to be different colors? For example, say I'm working with the plot

plot(x^2,x=-1..1,tickmarks=[[-1,-1/2,1/2,1],[]]);

Is there a way to make the tickmarks at x=-1/2,1/2 red while making the tickmarks at x=-1,1 blue?

Or, alternatively, is there a way to turn the tickmarks at x=-1/2,1/2 into red subticks and make the tickmarks at x=-1,1 blue?

Thanks!

I woud like to have some help in using Maple to solve some complicated integrals.Specificaly, I would like to take the help of maple in differentiating an integral w.r.t. a parameter.

First, I will start with an integral for which Maple gives a solution. Let me first start with the assumptions :

Hello,

I seem to be having trouble with the define_external command.

I want to call a C-library from maple, and I think I need to convert the maple data in C. So I need a custom wrapper.

But I can't get the simple example from here to work for me. Specifically, I tried this:

I am having trouble getting an algebraic solution for a first order four-ODE system. The problem seems trivial to me. However, Maple is taking a very long time to solve it. The system describes a reversible "chemical" reaction that have 4 states. Basically, the system is

C1<->C2<->C3<->O1

where the rate constants are ai towards the right and bi towards the left.

Any suggestion will do.

Thanks!

Hello all,

I have a question about converting a continuous piecewise function to Heaviside function, which the function includes trunc() in its conditions.

(I found differentiating piecewise function gives me "undefined" at boundary)

When I do that operation (convert(piecewisefunc, Heaviside)) I get the error below.

"Error, (in piecewise/simprootsstep) cannot determine if this expression is true or false: 0 < 183.3333333*Pi"

In the simplest case I could find of this...

How do I get Maple to simplify: sqrt(x.y)/x.y  to  1/sqrt(x.y)

?

If I remove any one of the 4 factores out of the equation above, it will just do it, but with the 4 together I just can not get it to give it to me in a "sensible" form.

Tx

Max

Hello,

suppose I have a huge polynomial in several variables, say x, y and z, with some unknown coefficients:

(a*b+1)*x^3+(a+b+1)*x^2*y^2+(a-b^3)*x*y^2+a*y^10

Is there an efficient way to obtain all coefficients, when interpreting this as a polynomial in x and y?

(My goal is to make maple solve the equations in a and b  in order to let the polynomial be identically zero)

Many thanks!