42. Find the family of curves that is orthogonal to the fam- ily defined by the equation y? = cx and provide a sketch depicting the orthogonality of the two families.

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Please answer the attached question in pic 1. Pic 2 is the solution - please explain the steps. Thank you.

42. The hyperbolas with F(x, y) = y²/x = C are the
solid curves in the following figure. The orthogonal
family must satisfy
dy
2x
dx
ду
ax
y
The solution to this separable equation is found to be
given implicitly by G(x, y) = 2x² + y² = C. These
curves are the dashed ellipses in the accompanying
figure. They do appear to be orthogonal.
1
> 0
-1
-2
-2
-1 0 1 2
Transcribed Image Text:42. The hyperbolas with F(x, y) = y²/x = C are the solid curves in the following figure. The orthogonal family must satisfy dy 2x dx ду ax y The solution to this separable equation is found to be given implicitly by G(x, y) = 2x² + y² = C. These curves are the dashed ellipses in the accompanying figure. They do appear to be orthogonal. 1 > 0 -1 -2 -2 -1 0 1 2
C defines a family of
An equation of the form F(x, y)
curves in the plane. Furthermore, we know these curves are
the integral curves of the differential equation
dy
ƏF
dy = 0
ду
ƏF
dx +
ax
dF
or
dx
ax
dy
(6.44)
A family of curves is said to be orthogonal to a second fam-
ily if each member of one family intersects all members of the
other family at right angles. For example, the families y = mx
and x? + y? = c² are orthogonal. For a curve y = y(x) to be
everywhere orthogonal to the curves defined by F(x, y) = C
its derivative must be the negative reciprocal of that in (6.44),
or
dy
ƏF
ƏF
dx
ду
ax
The family of solutions to this differential equation are orthog-
onal to the family defined by F(x, y) = C.
42. Find the family of curves that is orthogonal to the fam-
ily defined by the equation y?
depicting the orthogonality of the two families.
= cx and provide a sketch
Transcribed Image Text:C defines a family of An equation of the form F(x, y) curves in the plane. Furthermore, we know these curves are the integral curves of the differential equation dy ƏF dy = 0 ду ƏF dx + ax dF or dx ax dy (6.44) A family of curves is said to be orthogonal to a second fam- ily if each member of one family intersects all members of the other family at right angles. For example, the families y = mx and x? + y? = c² are orthogonal. For a curve y = y(x) to be everywhere orthogonal to the curves defined by F(x, y) = C its derivative must be the negative reciprocal of that in (6.44), or dy ƏF ƏF dx ду ax The family of solutions to this differential equation are orthog- onal to the family defined by F(x, y) = C. 42. Find the family of curves that is orthogonal to the fam- ily defined by the equation y? depicting the orthogonality of the two families. = cx and provide a sketch
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