- #1
calchelpplz
- 8
- 0
I need help please on a calculus problem. I am trying to teach myself and am doing fair. I am stuck on this though.
Question:find the volume using CROSS SECTIONS that are squares.
base is bounded by
y = x + 1
y = x squared - 1
cross sections are squares
perpendicular to the x axis
I know to use the area = side squared due to it being a square
I set the 2 equations equal to find the integral goes from -1 to 2
I took the top minus bottom to get equation of (x + 1 ) - ( x squared - 1)
which becomes all squared due to the definition of area of a square
so I get x^4 - x^3 -2x^2 -x^3 +x^2 +2x -2x^2 +2x +4
then I combine like terms and integrate?
I don't get the answer
answer should be 8.1 it says.
thanks in advance.
Question:find the volume using CROSS SECTIONS that are squares.
base is bounded by
y = x + 1
y = x squared - 1
cross sections are squares
perpendicular to the x axis
I know to use the area = side squared due to it being a square
I set the 2 equations equal to find the integral goes from -1 to 2
I took the top minus bottom to get equation of (x + 1 ) - ( x squared - 1)
which becomes all squared due to the definition of area of a square
so I get x^4 - x^3 -2x^2 -x^3 +x^2 +2x -2x^2 +2x +4
then I combine like terms and integrate?
I don't get the answer
answer should be 8.1 it says.
thanks in advance.