Question in orthogonal trajectories

In summary, the concept of orthogonal trajectories involves a set of curves that intersect a given family of curves at right angles. They are important in mathematics as they have various applications and can be determined using the differential equation of the original family of curves. There is a relationship between orthogonal trajectories and isoclines, as the former intersect the latter at right angles. However, orthogonal trajectories can only exist for certain families of curves that meet certain conditions.
  • #1
manal950
177
0
Hi

290514745.jpg

answer b
466302518.jpg


I forget first step

2aydy/dx = 3x^2


please can check my answer
 
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  • #2
I'm not able to follow the logic of your method, but it does not seem to give a valid answer. The original family is g(x, y) = x3/y2 = a; if your answer f(x, y) = y2+x = c is correct then you should find ∇f.∇g = 0. ∇g = (3x2/y2, -2x3/y3); ∇f = (1, 2y); ∇f.∇g = 3x2/y2 - 4x3/y2.
 

What is the concept of orthogonal trajectories?

The concept of orthogonal trajectories refers to a set of curves that intersect a given family of curves at right angles. In other words, the tangent lines of the orthogonal trajectories are perpendicular to the tangent lines of the original curves.

Why are orthogonal trajectories important in mathematics?

Orthogonal trajectories are important in mathematics because they can be used to solve various problems in fields such as physics, engineering, and economics. They also have applications in curve fitting and optimization.

How can orthogonal trajectories be determined?

Orthogonal trajectories can be determined by using the differential equation of the original family of curves. The slopes of the orthogonal trajectories can be found by taking the negative reciprocal of the slopes of the original curves.

What is the relationship between orthogonal trajectories and isoclines?

Isoclines are curves that represent equal values of a function, while orthogonal trajectories are curves that intersect these isoclines at right angles. This means that the curves of orthogonal trajectories are perpendicular to the curves of isoclines.

Can orthogonal trajectories exist for any family of curves?

No, orthogonal trajectories can only exist for families of curves that satisfy certain conditions. These conditions include the existence of a differential equation and the curves being smooth and continuous.

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