- #1
Toanizzle
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help with washers method about a line :(
We are given two curves y=sin(x) and y=0. Use washers to revolve this around the line y=-2 from 0 to pi.
I kno that the equation is 2pi Int( height x radius x thickness), but i have absolutely no idea what to plug in and how to figure out where these things come from :(
I kno how to do it about the x axis, by using pi Int(R(x)-r(x))dx but how do i do it about the line y=-2?
Homework Statement
We are given two curves y=sin(x) and y=0. Use washers to revolve this around the line y=-2 from 0 to pi.
Homework Equations
The Attempt at a Solution
I kno that the equation is 2pi Int( height x radius x thickness), but i have absolutely no idea what to plug in and how to figure out where these things come from :(
I kno how to do it about the x axis, by using pi Int(R(x)-r(x))dx but how do i do it about the line y=-2?
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