Given the curves
y=9-x^2,
y=0
we have to find the volume using the shell method.
so , the volume of vertical rotation is given as
V=2*pi int_a^b p(x)h(x) dx
where p(x) is a function of average radius and h(x) is a function of height
so as the solid is rotating with respect to y=0 ie x axis
sop(x) =x
and height h(x) = 9-x^2
now let us find the range of x on the x axis by the intersection of the curves y=9-x^2 and y=0
=> 0=9-x^2
=> x= +-3
now the volume is =2*pi int_a^b p(x)h(x) dx
= 2pi int_-3^3 (x)(9-x^2) dx
=4pi int_0^3 (9x-x^3) dx
=4*pi *[(9x^2)/2-x^4/4]_0 ^3
= 4*pi *[[(9(3)^2)/2-(3)^4/4]-[0]]
=4*pi*81/4
= 81pi
is the volume
Tuesday, May 27, 2014
y = 9-x^2 , y=0 Use the shell method to set up and evaluate the integral that gives the volume of the solid generated by revolving the plane region about the y-axis.
Subscribe to:
Post Comments (Atom)
Why is the fact that the Americans are helping the Russians important?
In the late author Tom Clancy’s first novel, The Hunt for Red October, the assistance rendered to the Russians by the United States is impor...
-
There are a plethora of rules that Jonas and the other citizens must follow. Again, page numbers will vary given the edition of the book tha...
-
The only example of simile in "The Lottery"—and a particularly weak one at that—is when Mrs. Hutchinson taps Mrs. Delacroix on the...
-
A good thesis statement presents a claim (an interpretive stance on a story that can be defended using textual evidence) and is a position w...
-
The given two points of the exponential function are (2,24) and (3,144). To determine the exponential function y=ab^x plug-in the given x an...
-
What does the hot air balloon symbolize? To the Assad son who buys the hot air balloon, it symbolizes a kind of whimsy that he can afford. B...
-
The play Duchess of Malfi is named after the character and real life historical tragic figure of Duchess of Malfi who was the regent of the ...
-
Allie’s baseball mitt is extremely important to Holden in The Catcher in the Rye. It is a symbol of Allie since it was important to his brot...
No comments:
Post a Comment