I'm bored as fuck, Veeky Forums. Give me some math problems

Lim of X as X goes to of (X(sin(erf(x)))

A is 70 B is 60

>Lim of X as X goes to of

lol epic fail!!! XDDDD

I know the answer to my question I just asked but how can it be true for one solution if it's a quadratic equation

(x-a)^2 has one real solution a=0

the vertex is at (a,0)

Using the nth term test, determine the convergence or divergence of the sequence. If the sequence converges, find its limit.
[math]a_n=cos2nπ[/math]

By definition, it diverges because it doesn't =0 right? The answer key says it converges. Can someone explain this to me? I know it =1, so that means it converges onto that point..?

yes, I am retarded.

in fact isn't it true even for two complex solutions (assuming real coefficients on the polynomial)?

it converges because its just a constant sequence of 1s, every cos(2pi*n) is equal to 1 for integer n

it's not because it doesnt equal 0

Go to Project Euler and do some programmin.

>do some programming

No.