Recent content by 76Ahmad

  1. 7

    LaTeX Fill with color three of five sectors in circle with latex.

    Hi every one, here is a question about drawing and filling in Latex (\usepackage{tikz}) I just draw a circle with 5 sectors correctly, and what I need help on please, how I fill 3 sectors with green color and the other 2 sectors with red... please help me with this task...
  2. 7

    Mathematica Printing only integer values for some equation using MATHEMATICA.

    Hello every one, I need help on some mathematica run program. Suppose the following: 1) 2=<t=<1000 2) r=3+2Sqrt[2] 3) k=(r^t+r^(-t)-20)/4 4) n=2k+4 5) x=n/2-(r^t-r^(-t))/2Sqrt[2] I need to run the program For[t=2,t=<1000,t++ and only print if it found any...
  3. 7

    Mathematica Count from MatrixForm in mathematica

    Count from "MatrixForm" in mathematica! Hi every one, I really need help on this task.. how do I Count only the zeros elements from a MatrixForm in MATHEMATICA Suppose I have a Matrix 100X100 full with numbers and I just need to know how many zero is there on this matrix thanks
  4. 7

    Mathematica Solving equation using mathematica

    I tried the the first one and the out put was: My x: 0 my y: 0 I do not know if its checked all the values correctly? how to make it print for example on each 50x x=50 no solutions x=100 no solutions x=150 no solutions . . .
  5. 7

    Mathematica Solving equation using mathematica

    Hello every one, I need help please... How to write in mathematica to solve an equation of x and y that is equal to 0, (i.e. y^4+2y^2x^2-15x=0) and let the program try all the value of x=0,1,2,3,...,10000. and all the value of y=0,1,2,3,...,100. The program should start with x=0 and try all...
  6. 7

    Mathematica How to get a special coordinates {x,y} from a matrix in MATHEMATICA.

    Hello every one, this question for a mathematics experts... Suppose we have the matrix M = \left| {\begin{array}{cccc} 9 & 6 & 0 & 1 \\ 3 & 7 & 2 & 5 \\ 1 & 0 & 2 & 8 \\ 8 & 8 & 1 & 0 \\ \end{array} } \right| and we want to print only the coordinates that equal to 0...
  7. 7

    That is also equal to 0. Can you explain why?

    Thanks Norwegian.. I think you are right, can you explain in detail please. you can see that |a_2|=|a_{m^2-2}| so if we prove that a_2 = 0, then a_{m^2-2} is also = 0. what about a_{\frac{m^2}{2}}
  8. 7

    That is also equal to 0. Can you explain why?

    micromass + Mark44 I do not know what the is difficulty of a_i that is facing you both ! Knowing that I told you before a_i is the coefficient of z. if you still have a problem with a_i, just put m = 3 for example. you will get 1 + 3 z - 8 z^3 - 6 z^4 + 6 z^5 + 8 z^6 - 3 z^8 - z^9 then you...
  9. 7

    That is also equal to 0. Can you explain why?

    prove that this polynomials has only 3 zero coefficient, and they are a_2, and a_{m^2-2}, and a_{\frac{m^2}{2}} if m=2 mod 4.
  10. 7

    That is also equal to 0. Can you explain why?

    OK,, :) Let n=m^2 and\,\,\, s=\binom{m}{2}, n-s=\binom{m+1}{2} prove that the following claim is true \sum_{i=0}^{n}a_iz^i=(1-z)^{\binom{m}{2}}(1+z)^{\binom{m+1}{2}}
  11. 7

    That is also equal to 0. Can you explain why?

    Yes sure,, a_i is the coefficient of z. m is the integer power of z where it goes ++ to n. Thanks
  12. 7

    That is also equal to 0. Can you explain why?

    Prove of summation claim ?? Hi every one,, any idea how to prove the following claim \sum_{i=0}^{n}a_iz^i=(1-z)^{\binom{m}{2}}(1+z)^{\binom{m+1}{2}} i think we need to use some derivatives, may be the second derivative will help. please help.
  13. 7

    Find the integer zeros for equation of degree 8 ?

    Find the integer zeros for equation of degree 8 ? Hi I am trying to find the integer zeros of the equation: y^8-28y^6x+112y^6+210y^4x^2-1540y^4x-420y^2x^3+2464y^4+4200y^2x^2+105x^4-11872y^2x-1260x^3+8448y^2+4260x^2-5040x=0 I know that I need some substitution to make the degree goes down. for...
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