Maths A level Help!

the diagram shows a sketch of the curve y= (x 1)^(-1/2). the region enclosed by the curve, the coordinate axes and the line x=1 is rotated completely about the x axis' volumes of revolution. Find the volume of the solid formed.

Reply 1

Jasmine0400

OP

4

the diagram shows a sketch of the curve y= (x+1)^(-1/2). the region enclosed by the curve, the coordinate axes and the line x=1 is rotated completely about the x axis. Find the volume of the solid formed.

When ever I do this, the indices come out as 0???

Reply 2

B_9710

18

Original post by Jasmine0400

the diagram shows a sketch of the curve y= (x+1)^(-1/2). the region enclosed by the curve, the coordinate axes and the line x=1 is rotated completely about the x axis. Find the volume of the solid formed.

When ever I do this, the indices come out as 0???

You are calculating

\pi \int_0^1 y^2 \ dx = \pi \int_0^1 1/(x+1) \ dx

Maths A level Help!

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