math

posted by .

i am having trouble iwth the following math problem:

lim
x->oo -x/squre root 4+xsquare

I am not sure if i multiple the denominator with the numerator?

  • math -

    The answer depends upon whether the x^2 is in the denominator, and whether you mean sqrt 4 + x^2 or sqrt (4 + x^2). You need to use parentheses to clarify the meaning.

    If you mean -x/[sqrt (4 + x^2)]
    Then limit as x-> infinity = -1, because the 4 becomes negligible compared to x^2

    If x^2 is a separate term, then the limit is infinity

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    the limit of cuberoot((-3x^3+5x+2)/(x^2-1)) as x approaches 3 is the problem. how could (-3x^3+5x+2) so it would be factored out with denominator?
  2. calc

    need to find: lim as x -> 0 of 4(e^2x - 1) / (e^x -1) Try splitting the limit for the numerator and denominator lim lim x->0 4(e^2x-1) (4)x->0 (e^2x-1) ______________ = ________________ lim lim x->0 e^X-1 x->0 e^x-1 …
  3. Math help plz ASAP.

    Rationalize each denominator. 6 + square root of 2 ____________________________ square root of 3 PLZ HELP..dont kno how to do this question.plz explain..thanks You have (6 + sqrt(2))/sqrt(3) multiply that by sqrt(3)/sqrt(3) to get …
  4. Algebra

    Solve Rational Inequalities x^2-x-2/x^2+5x+6<0 I cant figure this out. Please help. numerator (x-2)(x+1) denominator (x+3)(x+2) numerator/denominator <0 which means the numerator and denominator are of opposite signs. Case one: …
  5. Maths

    Write the following expression into its simplest form?
  6. math

    im having trouble with radicals, we learned them today but our teacher dint go over what to do with fractions, could u tell me what to do in the square root of 5/36?
  7. Calculus/College Algebra

    I'm so lost. We're working on limits for this assignment and I get that, but my difficulty lies in breaking down the original problem. The problem is: Find the limit: lim (x->5) The numerator is (the square root of 9-x) -2 and the …
  8. Math

    Help me!;/ 1) my numerator is 6 less than my denominator. I am equivalent to 3/4. 2)my denominator is 5 more than twice my numerator. I am equivalent to 1/3. 3)the gcf of my numerator and denominator is 3. I am equivalent to 2/5. 4)the …
  9. math

    the sum of numerator and denominator is 3 less than twice the denominator.If the numerator and denominator is decreased by 1 , the numerator becomes half the denominator.Find the fraction?
  10. algebra

    I am trying to rationalize a denominator and it is a squre root, like this : squre root of x+1 , i don't know what to do ,cause it isn't just a number it is the whole expression. plz help

More Similar Questions