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Homework Statement
lim (x-->infinity) [(sqrt(cosX)-cosX)/(x^2)]
Homework Equations
hey guys, can anyone please help me solve this limit (without a calculator..)
10x!
lim (x-->infinity) [(sqrt(cosX)-cosX)/(x^2)]
I drew the graph, it seems to be going to zero when x->∞
The case for x->0 is much easier - the answer is 1/4...
is that what u meant?
ok.. I think I see where u're going with this...
so it's actually not defined when x->∞
well...
the bottom obviously goes to ∞ when x->∞
and as for the top.. I have no idea...
that's where i got stuck the 1st time..
what do you do with cosx when x->∞?