dexterhocutt1842 dexterhocutt1842
  • 25-02-2020
  • Mathematics
contestada

Find a vector function that represents the curve of intersection of the paraboloid z= 9x^2 + 4y^2 and the cylinder y=3x^2. Use the variable t for the parameter.
r(t)=

Respuesta :

AlonsoDehner AlonsoDehner
  • 25-02-2020

Answer:

[tex]r(t) = ti + 3t^2 j + (9t^2+36t^4)k[/tex]

Step-by-step explanation:

The two curves are given as

[tex]z= 9x^2 + 4y^2\\y=3x^2[/tex]

We have to find the parametric form for the curve of intersection.

Let us assume that x = t

Then we get

[tex]y = 3x^2 = 3t^2[/tex]

Now

[tex]z=9x^2+4y^2\\= 9t^2+4(3t^2)^2\\= 9t^2+36t^4[/tex]

Hence parametric form would be in vector as

[tex]r(t) = ti + 3t^2 j + (9t^2+36t^4)k[/tex]

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