6.1. -
p 1
¢ + 1 × ¢ + 2 × =
p 2 - .
f (x),
6.2.
o.o = c 1 × y 1 + c 2 × 2,
y 1
y 2 - .
6.3. -
= kx,
k = const.
= kx
¢ + 1 × ¢ + 2 × = 0
(6.3)
k.
× k + p 2 = 0
(6.3)
(. 1).
1
- | |
- k 1 ¹ k 2 | = k 1 x + c ek 2 x .. 1 2 |
k 1 = k 2 = k | = kx + c × x × ekx .. 1 2 |
k 1,2 = a i b | = α x × cosβ x + c × e α x × sin β x .. 1 2 |
6.4.
= . + .,
. - -
,
. - .
f (x) - . 2:
2
- f (x) | - | |
f (x) = Pn (x) | 1. 0 - - - | . = Qn (x) |
2. 0 - s | = x s × Q (x) . n | |
f (x) = e α x × P (x) n | 1. a - - - | = e α x × Q (x) . n |
2. a - s | = xs × a x × Q (x) . n |
. 2
- f (x) | - | |
f (x) = cos βx + + sin β x | 1. b i - - | y . = ~ cos b x + + ~ sin b x |
2. b i - - - | . = = x (~ cos b x + + ~ sin b x) | |
f (x).= = ex (A cosb x + + sin β x) | 1. a i b - | . = = ex (~ cos b x + + ~ sin b x) |
2. a i b - | . = = xe a x (~ cos b x + + ~ sin b x ] |
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