For example,

I have original bit :=[10000000]. after encryption by using technique cryptography, I get thecipher text:=[11110011]. Then I need to measure the total flipped bit in the cipher text with the original bit. Have any method can calculate the total flipped bit? Can someone help me? Thank you.

For example, I havd matrix m:=[0 1 0 1 0 1 0], I want to convert it back to m:=[0,1,0,1,0,1,0]. Can someone help to solve? Thank you.

Hi all, 

I have two inter-related expressions of the form,

(i) T=f(w)

(ii) E=g(w)

where the limits of w in both expressions are same. Now I need to plot a graph T Vs E. 

Any suggestions???

Download Matrix_Interpolation.mw

Hello Mapleprime Community,

Would you be kind to help me with the attached Maple worksheet. My goal is to do a 2D interpolation given the value of SR (slenderness ratio) and E_G (Young's modulus / Shear modulus ratio) in the Matrix table Vert_Coeff with header as vector E_G and the other as vector SR. I’m confused as to how to do the interpolation. Please help.

Regards,

Moses

So, I have the following inputted into Maple 2015, but the plots are not displaying.  I've double checked the syntax, but I don't see anything wrong.  Any thoughts?  Thank you!

plot3d(cos(theta)^2, phi = 0 .. 2*Pi, theta = 0 .. Pi, axes = BOX, style = line, grid = [50, 50], view = [-1 .. 1, -1 .. 1, -1 .. 1], coords = spherical);

Trying to plot that here actually displays the plot, but it isn't showing up in my Maple worksheet.

hi

how pdsolve 2D couple  non linear differential equations which attached below?

thanks

2D.mw

Download 2D.mw

I need to receive a plot of the next equation:

E:=0.001;

eq := E*(diff(y(x), `$`(x, 2)))+(x^2+1)*(diff(y(x), x))-x*(x-1/2)^2 = -x^2+2.7^x ;

/*(x=0..1, y(0)=-1, y(1)=0)*/

I try to use DEplot in such way DEplot(eq, y(x), x = 0 .. 1, y = -1 .. 0); but i always get a bug like 

Error, (in DEtools/DEplot) cannot produce plot, non-autonomous DE(s) require initial conditions.

Is it possible to do the ab-initio method for differentiation in maple?

In working on an answer to a recent question on MaplePrimes:
http://mapleprimes.com/questions/210948-Can-We-Trust-Maple

I noticed that in solving a "simple" system of two equations in two unknowns, potentially undesirable expansion occurs.
The two equations were only simple in the sense that the solving was very trivial, since the two unknowns occurred (almost) already isolated on the left:
eq1:=diff(x(t),t)=rhs1;
eq2:=1.2345*diff(v(t),t)=rhs2; #rhs2 is very complicated in the link given.
So in isolating I tried:
solve({eq1,eq2},{diff(x(t),t),diff(v(t),t)});
The resulting ode system took considerably longer to solve numerically than an unexpanded version.
It is trivial (of course) to do the solving without solve in this case.

Here is an extremely simple example, where the unknowns are already isolated, so that the equations themselves are actually the solution.

restart;
eq1:=a=b*(c+d);
solve(eq1,a); #No expansion
eq2:=e=b*(c+d)+f*(8+k);
solve({eq1,eq2},{a,e}); #Expanded:
                   {a = b*c+b*d, e = b*c+b*d+f*k+8*f}

Can expansion be avoided?

So, I am working in a partial differeital equations course and we are doing image processing. I am taking an image and pixel by pixel applying the heat equation to smudge out noise. I created a for loop for the equation and it works, I need to itterate it over and over again. Here is my code:

for t from 1 to 20 do    

for j from 2 to 149 do

for k from 2 to 149 do  

`tile2__j,k`:=dellT/(h^(2))*(`tile__j+1,k`-4*`tile__j,k`+`tile__j-1,k`+`tile__j,k-1`)+`tile__j,k`  

 end do

end do  

for m from 2 to 149 do

for n from 2 to 149 do  

`tile__m,n`:= `tile2__m,n`  

end do

end do  

t := t+1  

end do

Sorry, I could not get the Maple Math editor to work so I just copied my code. Apologize. I keep getting the error "Error, Invalid loop statement termination." Help?

I am examining the curve given by

y=R(x/L)^n

When I put this in and assign a number to any one variable, Maple always returns

y=0.8660254038

I have tried changing the names of the variables, unnassigning variables, restarting Maple, etc. but I cannot plot a function of y with x, I always get y=0.8660254038, even with only one variable assigned to a value.  I am using the student version of Maple 17.

Thanks,

David

Does anyone know how to do crossover between block of binary number?

Example :

If I have 4 blocks, [0011001],[0011100], [0101010], and [1001110].

the first block will crossover with the second block, the second block will crossover with the third block, the third block will crossover with the last block and the last block must crossover with the first block. 

I had tried the code as below. 

for i from 1 to 4 do

for j from 1 to 7 do

block[i][j]:=block[i+1][j];

end do;

new_block[i]:=block[i];

end do;

The problem is the crossover can be done from 1 with 2, 2 with 3 and 3 with 4. But this code unwork for crossover for last block with the first block. Can someone help me? thank you in advance.

Hi,

I have a linear mathematical model that is in deterministic form, but actually one of the input parameters has a stochastic nature and follows a log normal distribution function. and I need to include this in the formulation. Please help me with this questions:

1) Do I need to use stochastic programming methods to solve it? if yes, how?

2) How can I include the distribution function in my model?

3) Can I solve the these kinds of problems using Maple?

How to random generate 2 integer number with condition x must be less than y ?

I had tried the coding below. But the output shown not what i want.

x:=RandomTools[Generate](integer(range=1..7);

y:=RandomTools[Generate](integer(range=1..7);

if x>= y then x:=RandomTools[Generate](integer(range=1..7); y:=RandomTools[Generate](integer(range=1..7); end if;

Example:

I get x:= 5 , y:=1, then i need to regenerate the value of x and y using the last statemet above. but the problem is sometime i might still get the value of x>= y for example on second generate x:3, y=2. I need a code that x and y must be regerate until it get x<y. Can someone help ? Thank you in advance.

How difficult is it to simulate gravitational influences and perturbing effects on celestial orbits with Maple? Could this syntax http://www.maplesoft.com/applications/view.aspx?SID=4484&view=html be altered without excessive changes to consider these aspects?

Are there somewhere worksheets to take a look at as an introduction and to see how such goals would be approached and implemented?