Calculus

posted by .

can someone please explain

h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 7 0 4 1 1 4 5

  • Calculus -

    division by zero is NOT allowed
    (x+5)/(x-3) is valid for all x except x=3

  • READ -

    but I can evalute using limits...

  • CAN SOMEONE READ THIS -

    please

  • Calculus -

    Whatever you did using limits is wrong.

  • Calculus -

    The limit at x=3 exists if lim x→3- equals lim x→3+.

    In this case, the two are not equal, because they tend toward inifinity in opposite directions, so the limit does NOT exist. Even if they tend toward infinity in the same direction, the limit does not exist.

    Even in the case where the limit exists, as in the case of
    f(x)=(x-3)*(x+5)/(x-3),
    the point x=3 remains a hole in the domain of f(x).

    In the case of f(x)=(x+5)/(x-3), there is no doubt that the point x=3 is excluded from the domain, which is ℝ\3.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Calculus: Derivatives

    I'm having trouble understanding what derivatives in calculus (instantaneous speed) is. Can someone please explain it to me, or provide some easy links to learn from?
  2. calculus

    the equation cosx=x has a solution in what interval?
  3. Calculus

    can someone please explain h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ?
  4. Calculus AB (AP)

    Hi, I have a calculus test tomorrow and I understand how to complete all of the problems, but I am unsure behind the reasoning of taking two derivatives. Can someone please explain the following: 1. g(x)=e^(f(x)) g'(x)=e^(f(x))f'(x) …
  5. Calculus

    int x^9*(sin(x^5)) Can someone please explain me how to do this integral?
  6. Calculus

    int x^9*(sin(x^5)) Can someone please explain me how to do this integral?
  7. Maths-can someone explain something to me???

    hey, can someone explain vectors to me? im soooooo lost, I don't understand them at ALL. please please please help me. :(
  8. Calculus

    Can someone please explain how to solve this type of question?
  9. Pre-Calculus

    Can someone please explain how eccentricity can be used to classify conics.
  10. Calculus

    if f(x)= |(x^2-9)(x^2+1)| how many numbers in the interval [-1,1] satisfy the mean value theorem?

More Similar Questions