Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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## #26 2006-01-02 10:18:03

krassi_holmz
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### Re: Help with 3D rotation

Simplified area:

Last edited by krassi_holmz (2006-01-02 10:18:27)

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## #27 2006-01-02 11:29:00

krassi_holmz
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### Re: Help with 3D rotation

Please correct me if i've done a muistake.

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## #28 2006-01-02 11:41:46

God
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### Re: Help with 3D rotation

The work seems right, so if you made a mistake, I haven't noticed it. Thanks

## #29 2006-01-02 16:55:47

John E. Franklin
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### Re: Help with 3D rotation

In all the light green graphs of previous posts, the point (e,0) is wrong, it is (e, -1) like in krassi's hand drawing before he raised it by 1.
Also here is some more information in a new plot showing three regions to be rotated, the hardest one being the skinny area I have labelled region C.

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## #30 2006-01-02 19:48:32

krassi_holmz
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### Re: Help with 3D rotation

Oh, yes, we want to know the volume.

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## #31 2006-01-02 19:49:47

krassi_holmz
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### Re: Help with 3D rotation

But the AREA is true.

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