- #1

ada0713

- 45

- 0

## Homework Statement

Find the upper bound for

[tex]\int[/tex] (from 3 to infinity) e^(-x^2)

[hint: e^(-x^2) < e^(-3x) for x>3]

## The Attempt at a Solution

I don't understand what they mean by "upper bound"

Are they asking for the upper bound for the area below e^(-x^2)

for 3<x<infinity ?

I knew that the function converges by graphing the function

y= e^(-x^2) and y=e^(-x) and comparing between those two,

but I'm not sure what the problem is asking for.

Pleas help me witht the start!