What Is the Equation of the Curve Reflected Over the Line x-y-2=0?

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In summary, the conversation discusses finding the equation of the curve on reflection of an ellipse about a given line. The attempt at a solution involves using the general point and the reflected point to form a condition that eliminates theta. One suggestion is to find the reflection of the general point about the given line and use the condition that the line joining the reflected point and the general point is perpendicular to the given line.
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utkarshakash
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Homework Statement


Find equation of the curve on reflection of the ellipse [itex]\dfrac{(x-4)^2}{16} + \dfrac{(y-3)^2}{9} = 1 [/itex] about the line x-y-2=0.

Homework Equations



The Attempt at a Solution


Let the general point be P(4+4cosθ,3+3sinθ). Let the reflected point be (h,k).

[itex]\dfrac{4+4cos \theta + h}{2} - \dfrac{3+3sin \theta + k}{2} - 2 =0[/itex]

I need one more condition so that I can eliminate theta.
 
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utkarshakash said:

Homework Statement


Find equation of the curve on reflection of the ellipse [itex]\dfrac{(x-4)^2}{16} + \dfrac{(y-3)^2}{9} = 1 [/itex] about the line x-y-2=0.

Homework Equations



The Attempt at a Solution


Let the general point be P(4+4cosθ,3+3sinθ). Let the reflected point be (h,k).

[itex]\dfrac{4+4cos \theta + h}{2} - \dfrac{3+3sin \theta + k}{2} - 2 =0[/itex]

I need one more condition so that I can eliminate theta.

Why not find the reflection of the point (4+4cosθ,3+3sinθ) about the given line? It gives h and k in terms of ##\theta## and its very straightforward from there.

Use the condition that line joining (h,k) and P is perpendicular to x-y-2=0. Can you take it from here?
 

Related to What Is the Equation of the Curve Reflected Over the Line x-y-2=0?

1. What is the equation of a reflected curve?

The equation of a reflected curve is a mathematical representation of a curve that has been reflected over a given axis. This means that for every point on the original curve, there is a corresponding point on the reflected curve that is the same distance from the axis of reflection.

2. How do you find the equation of a reflected curve?

To find the equation of a reflected curve, you need to first identify the axis of reflection. Then, you can use the properties of reflection to determine the new coordinates of each point on the curve. Finally, you can use these new coordinates to write the equation of the reflected curve in terms of the original equation.

3. What is the difference between a reflected curve and a translated curve?

A reflected curve and a translated curve are both transformations of an original curve, but they are different in how they change the position of the curve. A reflected curve is flipped over an axis, while a translated curve is shifted horizontally or vertically.

4. Can a curve be reflected over any axis?

Yes, a curve can be reflected over any axis, including the x-axis, y-axis, and any line in the coordinate plane. The equation of the reflected curve will change based on the axis of reflection, but the overall shape of the curve will remain the same.

5. How does the equation of a reflected curve affect its graph?

The equation of a reflected curve determines the position of each point on the curve after it has been reflected. This, in turn, affects the overall shape and orientation of the reflected curve. For example, reflecting a parabola over the x-axis will result in a parabola opening in the opposite direction.

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