Find parametric equations for the tangent line to the curve

podnescijy

podnescijy

Answered question

2021-11-20

Find the parametric equations for the tangent line to the curve at the given location using the supplied parametric equations.
x=1+2t, y=t3t, z=t3+t; (3,0,2)

Answer & Explanation

Heack1991

Heack1991

Beginner2021-11-21Added 13 answers

We're given parametric equation x=1+2t, y=t3t and z=t3+t and we're asked to solve for the parametric equations of the tangent line to the curve at the point (3,0,2)
We understand that the vector equation tr(t) is equal to given parametric equations.
r(t)=<1+2t,t3t,t3+t>
Solve for r(t) by differentiating each of the components of r(t) with respect to t
r(t)=<1t,3t21,3t2+1>
The parameter value corresponding to (3,0,2) is t=1. Plug in t=1 into r(t) to solve for r(1)
r(1)=<11,3(1)21,3(1)2+1>
=<1,2,4>
Consider the parametric equations for a line through the point (x0,y0,z0) and parallel to the direction vector <a,b,c> are
x=x0+at y=y0+bt z=z0+ct
Substitute (x0,y0,z0)=(3,0,2) and <a,b,c<1,2,4> into x, y and z, respectively to solve for the parametric equations of the tangent line to the curve
x=3+(1)t=3+t y=(0)+(2)t=2t z=(2)+(4)t=2+4t

user_27qwe

user_27qwe

Skilled2023-05-28Added 375 answers

Step 1:
Given parametric equations:
x=1+2t,
y=t3t,
z=t3+t.
First, we find the derivatives of x, y, and z with respect to t:
dxdt=ddt(1+2t)=2·12t=1t,
dydt=ddt(t3t)=3t21,
dzdt=ddt(t3+t)=3t2+1.
Next, we substitute t = 3 into these derivative equations to find the slope of the tangent line at the point (3, 0, 2):
dxdt|t=3=13=33,
dydt|t=3=3(3)21=26,
dzdt|t=3=3(3)2+1=28.
Therefore, the direction vector of the tangent line is (33,26,28).
Step 2:
Now, we can write the parametric equations for the tangent line in vector form:
x=3+33t,
y=26t,
z=2+28t,
where <t<.
Hence, the parametric equations for the tangent line to the curve at the point (3, 0, 2) are given by x=3+33t, y=26t, and z=2+28t, where t varies from to .
star233

star233

Skilled2023-05-28Added 403 answers

Answer:
x=3+t
y=2t
z=2+4t
Explanation:
First, let's find the value of t that corresponds to the point (3,0,2). We can set the x, y, and z coordinates equal to their respective expressions in terms of t and solve for t. So we have:
1+2t=3 2t=2 t=1 t=1
Now, we can calculate the derivatives of x, y, and z with respect to t:
dxdt=ddt(1+2t)=2·12t=1t
dydt=ddt(t3t)=3t21
dzdt=ddt(t3+t)=3t2+1
Substituting t=1 into these derivatives, we get:
dxdt|t=1=11=1
dydt|t=1=3·121=2
dzdt|t=1=3·12+1=4
Now we have the direction vector of the tangent line, which is (1,2,4).
Finally, we can write the parametric equations for the tangent line using the point-slope form. Let P(t) represent the parametric equations of the curve. The tangent line can be expressed as:
x=3+1t
y=0+2t
z=2+4t
Therefore, the parametric equations for the tangent line to the curve at the point (3,0,2) are:
x=3+t
y=2t
z=2+4t

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?