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Given that the lines l1 and l2 whose vector equations are : l1:r = (6−2λ)i + (2-5)j l2 = μi + 3(1-μ)j, where λ and μ are constants. Find:

Mathematics

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Answer

3\textbf{3}

Step-by-step solution

3 steps

Voici la solution pour la question 1(i)(a) :

Puisque (x−1)(x-1) est un facteur de f(x)f(x), d'après le théorème du facteur, nous savons que f(1)=0f(1) = 0.

  1. Substituer x=1x=1 dans l'expression de f(x)f(x).

    f(x)=2x3+x2−(m+m2)x+m2f(x) = 2x^3 + x^2 - (m+m^2)x + m^2 f(1)=2(1)3+(1)2−(m+m2)(1)+m2f(1) = 2(1)^3 + (1)^2 - (m+m^2)(1) + m^2
  2. Simplifier l'expression et la poser égale à zéro.

    f(1)=2+1−m−m2+m2f(1) = 2 + 1 - m - m^2 + m^2 f(1)=3−mf(1) = 3 - m

    Puisque f(1)=0f(1) = 0, on a :

    3−m=03 - m = 0
  3. Résoudre pour mm.

    m=3m = 3

    La valeur de mm est 3\boxed{\textbf{3}}.

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