is a singular solution of the fi rst order and second degree
differential equation
2
40.
dy
y
dx
⎛⎞
−=
⎜⎟
⎝⎠
Note that the singular solution 0y = cannot be obtained from the
general solution for an
y value of the constant ‘a’.
For
mation of a differential equation is straight-forward while the
solution of a differential equation is not. So, we have to classify them
and fi nd methods of solution.
EXERCISE 1.1
Form the differential equation in each of the following cases by elimi-
nating ...
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