Spiral density function implementation

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Orr Streicher 2021-4-27

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评论： Orr Streicher 2021-5-5

采纳的回答： Paul

Hi,

I need to define a Spiral density function with parameters theat (the angle of the spiral) and r (the radius)

Does anyone know how can i do it ?

Thank

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Orr Streicher 2021-4-27

编辑：Orr Streicher 2021-4-27

I dont have the density function formula.. the assignment is to create a Spiral dentity function where thata distrebution is uniform [0, 4pi] and the radius r has normal distrebution where the expectation mu=thata/2 and std=2.5

Star Strider 2021-4-28

Is that in any way related to the problem in Creating a 3d Helix Spiral with Surf command ?

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Paul 2021-4-27

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I'm going to assume that the question means that the conditional density of r given theta is normal with exepectation mu = theta/2 and sigma = 2.5. Use the defnition of the conditional density function for continuous random variables. You will see that definition contains three terms. You're given two of them, solve for the third.

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Orr Streicher 2021-5-5

Thanks

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