Vector-valued functions Find a function r(t) that describes the following

eozoischgc

eozoischgc

Answered question

2021-12-07

Vector-valued functions Find a function r(t) that describes the following curve.
A circle of radius 3 centered at (2, 1, 0) that lies in the plane y=1

Answer & Explanation

movingsupplyw1

movingsupplyw1

Beginner2021-12-08Added 30 answers

Step 1
Given: A circle of radius 3 centered ate (2, 1, 0) that lies in the plane y=1
To Find: Vector-valued function r(t) that describes the above curve.
Formula Used: The equation of a circle with radius rand center (a, b, c) is given by:
(xa)2+(yb)2+(zc)2=r2
Step 2
Calculations:
The equation of the circle with radius 3 centered at (2, 1, 0) is given by:
(xa)2+(yb)2+(zc)2=32=9
The circle lies in the plane y=1
The equation of circle passing through y=1 is given by:
(x2)2+(z0)2=9
To find the vector valued function r(t), find the set of parametric equations:
x2=3costx=2+3cos
z0=3sintz=3sin
Hence, <x,y,z<2+3cost,1,3sint>
The vector valued function is therefore given by:
r(t)=<2+3cost,1,3sint(2+3cost)i+j+(3sint)k
Step 3
Answer:
r(t)=(2+3cost)i+j+(3sint)k

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