Recent content by MSchott

  1. M

    Solving lim x->4 (1/((sqrt x)-2))-4/(x-4)

    lim x-> 4 (1/sqrt (x) -2)-(4/x-4) Here is the LaTex version of the problem Thanks for your help leading me to LaTex. I am still unable to solve the problem. When I combine the fractions using a common denominator I get: (x-4)(sqrt (x) -2)/(Sqrt (x)+2)(x-2)
  2. M

    Solving lim x->4 (1/((sqrt x)-2))-4/(x-4)

    like so: x-4sqrtx+4/(sqrtx-2)(x-4) Then what?
  3. M

    Solving lim x->4 (1/((sqrt x)-2))-4/(x-4)

    Homework Statement lim x->4 (1/((sqrt x)-2))-4/(x-4) Homework Equations The Attempt at a Solution I have made several stabs at this problem. First I tried using values very close to 4 (e.g. sqrt of 4.001) Then I tried rationalizing the expression 1/((sqrt x) -2). That did...
  4. M

    What is the domain of f(x)=x^(2/3)?

    Mark 44 Thank you so much.
  5. M

    What is the domain of f(x)=x^(2/3)?

    acabus: I am still having difficulty understanding. If "b" is an even power doesn't the negative "a" under the square root sign become positive?
  6. M

    What is the domain of f(x)=x^(2/3)?

    What is the domain of f(x)=x^(2/3)? If I take a negative number and square it, the result is positive. For example, (-4)^2 is 16. The cube root is 16 is also a positive number. So I conclude that the domain of this function is "all real numbers". But in Wolfram the answer is "all...