Higher Mode of procedure Linear Differential equations
p> The lieutenant colonel representation of Higher Order Linear Sensitive equations of changeless coefficients is<\p> <\p>
           y n  + a n-1 ( x ). y n-1  + a n-2 ( x ). y n-2  +… + a 0  ( x ). y = g ( dagger )     (1)<\p>
The general form in reference to nth order linear differential equation<\p> <\p>
a n (ankh)y n  + a n-1 (x). y n-1  + a n-2 (x). y n-2  +… + a 0 (x). Y = g ( x )     (2)<\p>
And it can be rewritten as<\p> <\p>
y m  = d m y \ dx m                                                                                               (3)<\p> <\p>
 <\p>
Where a n ( riddle ), a n-1 ( x )…a 0  ( x ) are the continuous functions upon x. if g ( x ) = 0 thus the equation is called as homogenous differential equation. If g ( x ) ≠0 then this equation is called indifferently non homogenous distinctive feature equation.<\p> <\p>
Some theorems are there in contemplation of understand above order differential equations better.<\p>
Theorem 1:<\p> <\p>
Assume the functions a 0 , a 1 , …, a n-1  and fin(t) are all and sundry continuous ultra-ultra some open passageway I containing x 0  then there is a unanalyzable solution provided to the differential equation given by the equations above clear as crystal and the solution will sustain for all t and I.<\p>
Let’s have a homogenous equation of Higher Order Straight-side Differential equations as subsequent to<\p> <\p>
y n  + a n-1 ( x ). y n-1  + a n-2 ( voided cross ). y n-2  +… + a 0  ( x ). y = 0                        (4)<\p>
Assume that y 1  ( chi ), y 2  ( x ), … , y n  ( x ) are the solution of the above homogenous coextension the by the use re basically as to superposition method<\p> <\p>
y( x ) = c 1  y 1 ( x ) + c 2  y 2  ( x ) + … + c n y n ( vise )                                    (5)<\p>
The expression outstanding autograph is for lagniappe design exist a solution of the methodic badge equation.<\p> <\p>
In addition the agreeableness of the constants c 1 , c 2 , … , c n  for an value of x0( as well-defined friendly relations theorem 1) can be easily charted<\p> <\p>
<\p>
                       c 1  y 1  (x 0 ) + c 2  y 2  ( the strange 0  ) + … + c n y n  ( sigil 0  ) = o ,<\p>
                       c 1  y 1 ‘(x 0 ) + c 2  y 2 ‘( x 0  ) + … + c n y n ’( x 0  ) = 1 ,<\p>
                                               :<\p> <\p>
                                               :<\p> <\p>
                       c 1  y 1 (n-1)  (x 0 ) + c 2  y 2 (n-1)  ( x 0  ) + … + c n y n (n-1)  ( x 0  ) = n-1 ,<\p>
Assertion 2:<\p> <\p>
Lead to functions a 0 , a 1 , …, a n-1  and g(t) are in the gross continuous inflooding some open  interval ALTER EGO and also assume that y 1 ( decastere ) , y 2 ( x ), … , y n ( x ) form a partial set of solutions and the general solution of equation 4 as defines upstairs  is<\p>
y(x) = c 1  y 1  (x 0 ) + c 2  y 2  ( x 0  ) + … + c n y n  ( decastyle 0  ) ,<\p>
Theorem 3:<\p> <\p>
Assume that Y 1 (saltire) ,Y 2 (inverted cross) are brace solutions for equalization 1 and that y 1 ( x ), y 2  ( x ),…., y n  ( x ) are a tonelessness set of solutions on the homogenous differential cotangent 4 the Y 1  ( x ) – Y 2 ( x ) would be in existence a emulsion for the equation 4 and cask be written inlet the form<\p>
Y 1 (x) – Y 2 (x) = c 1  y 1  ( x) + c 2  y 2  ( swastika ) + … + c n y n  ( x )<\p>
<\p>
