Respuesta :

 When you substitute a 3 you get 1/2e∧(-6) and when you substitute a t it just goes to 0
 
Answer
1/2e(-6)

The area between the graph of [tex]y=e^{-2x}[/tex] and the x-axis for x greater than or equal to 3 will be [tex]\dfrac{e^{-6}}{2}[/tex] and it can be determine by doing the integration of the given function.

Given :

[tex]y=e^{-2x}[/tex]

The area between the graph of [tex]y=e^{-2x}[/tex] and the x-axis for x greater than or equal to 3 will be:

[tex]\rm Area = \int\limits^\infty_3 {e^{-2x}} \, dx[/tex]

[tex]\rm Area = 0-(-\dfrac{1}{2e^{6}})[/tex]

[tex]\rm Area = \dfrac{e^{-6}}{2}[/tex]

The area of region R is [tex]e^{-6}\div 2[/tex].

For more information, refer the link given below:

https://brainly.com/question/9658189

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