Question

Hello everybody , that's my first question i hope somebody can help me
i want to proof that limit of cosec(x) = +infinity as x approaches to Pi-0

Answer 1

pi-0?

Answer 2

yes it means : x approaches to -pi

Answer 3

Ok do you know that cosec x=1/sin x ?

Answer 4

i know that my friend , i just need to proof that demanding on basic definition of limits (delta and epsilon)

Answer 5

One method is the graph way. You can observe that it tends to +infinity as x approaches -pi.

Answer 6

i notice that on graph it's clear :) , but r u sure that's not possible to be proved by definition ? cuz i have a question like that

Answer 7

i need to proof that by definition do you have any idea for me ? pls