Respuesta :
Answer:
a) [tex]V(r) = \int\limits^5_00.114e^{-1.8r} \, dr[/tex]
b) [tex]V = 0.0629[/tex]
Step-by-step explanation:
We have that the depth, in millimeters, of the soot deposited each month at a distance r kilometers from the incinerator is given by:
[tex]H(r) = 0.114e^{-1.8r}[/tex]
(a) Write a definite integral (with independent variable r) giving the total volume of soot deposited within 5 kilometers of the incinerator each month.
This is the integral of H(r) with r varying from 0 to 5. So:
[tex]V(r) = \int\limits^5_0H(r) \, dr[/tex]
[tex]V(r) = \int\limits^5_00.114e^{-1.8r} \, dr[/tex]
(b) Evaluate the integral you found in part (a) to find the volume of soot.
[tex]V(r) = \int\limits^5_00.114e^{-1.8r} \, dr[/tex]
[tex]V(r) = 0.114\int\limits^5_0e^{-1.8r} \, dr[/tex]
[tex]V(r) = -\frac{0.114}{1.8}e^{-1.8r}, 0\leq r\leq5[/tex]
[tex]V(r) = -0.063e^{-1.8r}, 0\leq r\leq5[/tex]
[tex]V = V(5) - V(0)[/tex]
[tex]V = -0.00000777481 - (-0.063)[/tex]
[tex]V = 0.0629[/tex]
