Intermediate value theorem

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Intros
Lessons
  1. If: f is continuous on the interval [a ,b], and N is a number between f(a) and f(b)
    Then: there must be at least one number c between a and b such that f(c)=N
    Intermediate value theorem
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Examples
Lessons
  1. Application of Intermediate Value Theorem
    Prove that the equation has at least one real root.
    2x411x3+9x2+7x+20=02{x^4} - 11{x^3} + 9{x^2} + 7x + 20 = 0