I am using plot3d for the first time. It is cutting off the z-axis under certain rotations (both the axis label and the top of the plot). I am using Maple 11.01

Has anyone else experienced this problem, and how do I fix it?

thanks.

 

 

Can anyone tell me how to delete a set of questions? Yes it is clear how to delete one question. In earlier versions, there was a two step process in importing a question bank; one could import the question bank and then logout without  'saving' it if one did not want to keep the questions. When I import an existing question bank into v5, it seems to automatically save the questions. I now have a couple of hundred questions i want to delete!! The user guide on page...

The function I am attempting to plot is:

z(x) = z0 −(v1/g)*ln(cosh(g*x*60/v1))

where z0 is an initial value of 2000 at t=0, g=9.81, v1= 14.9165

my code is then

zx := 2000 - (14.9165/9.81)*ln(cosh(60*9.81*x/14.981))
 

plot(zx, x = 0..38)

However it seems to stop plotting values after x=19, even though putting values above 19 into zx will return you a numerical answer. Any help on this would be greatly appreciated.

restart; assume(x > 0); solve(x^2 = 4, x); fsolve(x^2 = 4, x)

I use this order, and want to get x=2, but the result is

suppose we want to find a curve

a * x * y + y + b * x + c = 0

given the following conditions:

y(x) = f(x)  and y'(x) = f'(x) and y(m)= f(m)

how to find a , b and c in terms of f, f'...

 

 

x := `<,>`(`<|>`(x[1]), `<|>`(x[2]), `<|>`(x[3]))

x := `<,>`(`<|>`(x1), `<|>`(x2), `<|>`(x3))

when input a matrix like this,the subscript seems be not embodied in the results

 

with this tool you can draw shapes and plots by ascii characters www.jave.de/

I interested to know is there any technique in maple for doing similar jobs like this ...

I want to solve the problem as follows,

What's the deal here? When I load Tools>Load Package>Units I get those brackets on the left side of the document along with a red >. I never got them before and now they show up on every new document. Not a big deal, I suppose, but when I hit the !!! the brackets and red >s start to proliferate. A couple more clicks of !!! and my worksheet is covered in them. I can't help but suspect, also, that this is related to the error message I get at the end of this worksheet.

Hi I will appreciate some help

I am trying to find the algebraic solution of the equation and want to express z in terms of c

z1 := 819*z^6+(-396+396*c)*z^4+306*z^3*c+(63*c^2-126*c+63)*z^2+(90*c^2-90*c)*z+6*c^3-9*c^2+18*c-6;

i use solve(z1=0,z) but i got

[z=RootOf(273 _Z^6+(-132+132 c) _Z^4+102 _Z^3 c+(-42 c+21+21 c^2) _Z^2+(-30 c+30 c^2) _Z-2+2 c^3-3 c^2+6 c).

Can anyone help?

can anyone help me with code to convert a matrix that is not diagonally dominant to the one that is diagonally dominant

Hi,

check out this deq:

y=2*x*y''

Maple says it's an Emden/Fowler deq with the following form:

Emden_Fowler_ode := x^p*p*(diff(y(x), x))/x+x^p*(diff(y(x), x, x))+x^sigma*y(x)^n = 0;

I tried to change the parameters p,n,sigma so that it describes my deq, but it does not completely fit.
I use n=1,p=0,sigma=-1 and i get

y=x*y''

How do i get in the missing constant 2 ?

 

Maple solves it correctly by the way.

Hi all I see it is very easy to define a simple function in Maple using -> But what if more than a single expression is needed and if local variables are needed ? Is there a way to put several statements and use local variables in a function definition ? For example to define a function that takes a list as it's argument and returns the arithmetic mean or the simple sum. Must such things be done with a procedure ? Thanks !

after differentiating a function that contains a product and summation using a counter i=1,2,...,n and j=1,2,...m    i got a result that contains things like these :-

sum from i1~=1  to  i-1    and  i1~=i+1  to  n

and i had in the function a variable z[i][j]  and in the result it became  z[i1~][j]

what does 1~ means ?

thankx in advance