Question

HELP PLEASEEE

Answer 1

Determine whether the integral is convergent or divergent.
\[\int\limits_{-\infty}^{\infty}87 \cos \pi t dt\]
If it is convergent, evaluate it. (If the quantity diverges, enter DIVERGES.)

Answer 2

This is my work, and what i have done so far. But i don't know what to do from here.

Answer 3

i think you are correct

Answer 4

Hmmm...

Answer 5

lets think though

Answer 6

Lets not and say we did. xD Looks good to me.

Answer 7

Sounds good to meh! :D

Answer 8

Seriously though. It looks good.

Answer 9

i medaled you raffle

Answer 10

Lol. But what do I do after this? Is it converging or Diverging? How do i know? Eh...

Answer 11

@Nnesha @AloneS @Awolflover1 @sshayer

Answer 12

btw, @iTz_Sid , your handwriting is immaculate. Im jealous.

Answer 13

@wckeller Oh Haha. Thanks! :P

Answer 14

It's not converging just by looking at it. What does cosine and sine functions do?

Answer 15

They continue on forever.

Answer 16

Yea

Answer 17

So it must be diverging.

Answer 18

Oooo. Okay I see

Answer 19

Thank you very much.