Math

posted by .

What does it mean by:
Show that the "value of 3x^2-6x+5" cannot be less than 1. ?

  • Math -

    show the opposite: the value is <1

    3x^2-6x+5<1
    3x^2-6x+4<0

    x= (6+-sqrt(36-48))/6

    well the serd here is imaginary. So the assumption of being less than one is false.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. geometric mean

    The geometric mean of two postitive numbers a and b is sqrt(ab). Show that for f(x) = 1/x on any interval [a,b] of positive numbers, the value of c in the conclusion of the mean value theorem is c = sqrt(ab) I have no idea how to do …
  2. calculus

    Let f(x) = (x+1)/(x-1). Show that there are no vlue of c such that f(2)-f(0) =f'(c)(2-0). Why does this not contradict the Mean Value Theorem?
  3. CALCULUS!

    suppose that 3 <_ f prime of x <_ 5, for all values x. show that 18<_ f(8)-f(2) <_ 30 <_ signs mean less or equal to... im supposed to apply mean value theorem or rolle's theorem... i don't understand neither so i cant …
  4. stats

    Consider an infinite population with 25% of the elements having the value 1, 25% the value 2, 25% the value 3, and 25% the value 4. If X is the value of a randomly selected item, then X is a discrete random variable whose possible …
  5. calc

    Use the Mean Value Theorem to show: -x < sinx < x for all x > 0 (and where I have the inequalities, it's supposed to be less than or equal to for the first two and greater than or equal to for the last one, I just didn't know …
  6. Chemistry

    When pH Value less than 0 or negative value ,it mean what?
  7. nicole

    1. determine the exact value.. cot 7pi/6 and sec(-210degrees) 2. determine approximate measure of all angels that satisfy following, and draw a sketch to show the quadrants involved cosTHETA = -0.77, -pi lessOr same than theta less …
  8. Math

    which letter on the number line show a value less than 3/5?
  9. Calculus

    show that ((x − 1)/x) <( ln x) < (x − 1) for all x>1 Hint: try to apply the Mean Value Theorem to the functions f(x) = lnx and g(x) = xlnx. I'm having trouble applying the mean value theorem
  10. Calculus

    Let f(x)=αx^2+βx+γ be a quadratic function, so α≠0, and let I=[a,b]. a) Check f satisfies the hypothesis of the Mean Value Theorem. b)Show that the number c ∈ (a,b) in the Mean Value Theorem is the midpoint of the interval …

More Similar Questions