pbamrah
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Been having trouble with working out part b to this question. Part a is straightforward, but I don't know where to start when it comes to part b.
Here's the question:
Figure 1 shows the curve with equation y =
1/ √3x+1
The shaded region is bounded by the curve, the x-axis and the lines x = 1 and x = 5.
(a) Find the area of the shaded region. (4)
The shaded region is rotated completely about the x-axis.
(b) Find the volume of the solid formed, giving your answer in the form kπ ln 2,
where k is a simplified fraction. (5)
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davros
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(Original post by pbamrah)
Been having trouble with working out part b to this question. Part a is straightforward, but I don't know where to start when it comes to part b.
Here's the question:
Figure 1 shows the curve with equation y =
1/ √3x+1
The shaded region is bounded by the curve, the x-axis and the lines x = 1 and x = 5.
(a) Find the area of the shaded region. (4)
The shaded region is rotated completely about the x-axis.
(b) Find the volume of the solid formed, giving your answer in the form kπ ln 2,
where k is a simplified fraction. (5)
Can you show us some working / what you've done so far?
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pbamrah
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(Original post by davros)
Can you show us some working / what you've done so far?
I don't even know where to start part b, but the answer for part a is 4/3. That's all i know
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davros
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(Original post by pbamrah)
I don't even know where to start part b, but the answer for part a is 4/3. That's all i know
Well to start with do you have a standard formula for volumes of revolution? Have you done any worked examples on this before?

Do you know the expected answer for part (b) i.e. k = ?
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