I'm having a major problem with this one calculus problem. I multiplied by the conjugate and ended up with something that seemed workable, but then when I multiplied through by the reciprocal of the highest power of x in the denominator, the answer was 2/0. What do I do with that? Detailed explanation please . . . I have a quiz coming up soon and this one is stumping me.
My calculator is showing the graph tends towards -1. To get the answer via the methods we were taught in class, I multiplied the function by conjugate/conjugate (in this case, x - sqrt[x^2 + 2x] OVER x - sqrt[x^2 + 2x]), leaving me with -2x OVER (x - sqrt[x^2 + 2x])
I then multiplied this fraction by 1/x OVER 1/x (the highest power of x in the denominator), allowed all newly created fractions with x in the denominator to turn into zero, and was left with -2/(1-sqrt[1]) which is -2/0. I don't know what to do with this.
Anyone following my confusion here??
In response to Yaroslav . . . I'm not understanding what you mean by "substitute a negative x for positive x." Can you show me a step-by-step explanation???
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