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Math Help - Help MAth7 solutions

  1. #1
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    Help MAth7 solutions

    Hi everybody.. I am new on the forum and I will say that the forum is fantastic. I can search and find many things. I have a problem with mathematic 7. It can not give me the solutions in next form: x1(s), x2(s)

    How can I get that????


    Solve[{x^2 - (N1 + N2 - n1*F1 - n2*F2)*x + (N1 - n1*F1)*(N2 - n2*F2) -
    H1*H2 ==
    0, (N1 - H1)*R*A1 == (E0*I1*k^4), (N2 - H2)*R*A2 == (E0*I2*k^4),
    n1 == k^2/(R*A1), n2 == k^2/(R*A2), H1 == K0/(R*A1),
    H2 == K0/(R*A2), E0 == 10^10, A1 == (s1*l)^2, A2 == (s2*l)^2,
    K0 == 2*10^5, I1 == ((s1*l)^4)/3, I2 == ((s2*l)^4)/3, R == 2*10^3,
    F1 == 10, F2 == 10, k == n*2/l, l == 10, n == 1, s1 == s, s2 == s},x]
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  2. #2
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    Quote Originally Posted by sandramirk82 View Post
    Hi everybody.. I am new on the forum and I will say that the forum is fantastic. I can search and find many things. I have a problem with mathematic 7. It can not give me the solutions in next form: x1(s), x2(s)

    How can I get that????


    Solve[{x^2 - (N1 + N2 - n1*F1 - n2*F2)*x + (N1 - n1*F1)*(N2 - n2*F2) -
    H1*H2 ==
    0, (N1 - H1)*R*A1 == (E0*I1*k^4), (N2 - H2)*R*A2 == (E0*I2*k^4),
    n1 == k^2/(R*A1), n2 == k^2/(R*A2), H1 == K0/(R*A1),
    H2 == K0/(R*A2), E0 == 10^10, A1 == (s1*l)^2, A2 == (s2*l)^2,
    K0 == 2*10^5, I1 == ((s1*l)^4)/3, I2 == ((s2*l)^4)/3, R == 2*10^3,
    F1 == 10, F2 == 10, k == n*2/l, l == 10, n == 1, s1 == s, s2 == s},x]
    It is very difficult to understand what you are asking. Please wrte those as separate equations. Also what is the relationship between " x_1" and " x_2" and "x"?
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  3. #3
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    x1 and x2 are solutions of the equation: x^2 - (N1 + N2 - n1*F1 - n2*F2)*x + (N1 - n1*F1)*(N2 - n2*F2) - H1*H2 == 0. But I want to get this solutions in function of s???
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