Tangent to a parametrized curve

In summary, a tangent to a parametrized curve is a line that touches the curve at a specific point and has the same direction as the curve at that point. It is calculated by finding the derivative of the parametric equations at that point, and can be used to understand the behavior of the curve and the rate of change or velocity of an object moving along it. There can be more than one tangent at a single point, and it is used in various real-world applications such as motion analysis, engineering, and physics.
  • #1
archaic
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Homework Statement
Given ##x=t^2-6## and ##y=t^3+3t##, what is the equation of the tangent to the curve when ##t=3##.
Relevant Equations
##m=y'(t)/x'(t)##
##x(3)=9-6=3##, ##y(3)=27+9=36##.
##\frac{y'(3)}{x'(3)}=\frac{3\times9+3}{2\times3}=\frac{30}{6}=5##.
##y=5(x-3)+36=5x+21##.
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  • #2
archaic said:
Homework Statement:: Given ##x=t^2-6## and ##y=t^3+3t##, what is the equation of the tangent to the curve when ##t=3##.
Relevant Equations:: ##m=y'(t)/x'(t)##

##x(3)=9-6=3##, ##y(3)=27+9=36##.
##\frac{y'(3)}{x'(3)}=\frac{3\times9+3}{2\times3}=\frac{30}{6}=5##.
##y=5(x-3)+36=5x+21##.
View attachment 260822
I can only suggest the format is not as required. It says to type an equation, but 5x+21 is not such.
 
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  • #3
haruspex said:
I can only suggest the format is not as required. It says to type an equation, but 5x+21 is not such.
o:)
 

Related to Tangent to a parametrized curve

1. What is a parametrized curve?

A parametrized curve is a curve that is defined by a set of equations, known as parametric equations, that describe the coordinates of points on the curve in terms of one or more parameters.

2. What is a tangent to a parametrized curve?

A tangent to a parametrized curve is a straight line that touches the curve at a specific point and has the same slope as the curve at that point. It represents the instantaneous direction of the curve at that point.

3. How do you find the tangent to a parametrized curve?

To find the tangent to a parametrized curve, you can use the derivative of the parametric equations. The derivative represents the slope of the curve at any given point, so by finding the derivative and plugging in the coordinates of the point, you can determine the slope of the tangent line.

4. What is the significance of the tangent to a parametrized curve?

The tangent to a parametrized curve is important because it helps us understand the behavior of the curve at a specific point. It can also be used to find the rate of change or velocity of an object following the curve.

5. Can a parametrized curve have multiple tangents at the same point?

Yes, a parametrized curve can have multiple tangents at the same point if the curve has a sharp turn or point of inflection at that point. In this case, the curve may have both a left and right tangent at that point.

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