Posted by mfrizza on October 15, 2002 at 17:08:09:
Help! I'm missing the point here...
half way through this limits -> inf. problem and I'm stuck on a basic algebra issue...
lim x-> inf.
x / sqrt(9x^2+ x) + 3x
next step...divide both sides by largest x in denominator...okay, let's use x
x/x / sqrt(9x^2 + x)/x + 3x/x
now we have 1 / sqrt(9x^2 + x)/x + 3...
I don't understand the mechanics of sqrt(9x^2 + x)/x ....how does that work!
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