# 2KɊւ

1. ̔̈ʉ߂
•  ${y}^{″}+2{y}^{\prime }+2y=0$
•  ${y}^{″}-5{y}^{\prime }+4y=0$

•  ${y}^{″}+2{y}^{\prime }+y=0$
•  ${y}^{″}+2{y}^{\prime }=0$

•  ${y}^{″}-5{y}^{\prime }+6y=0$
•  ${y}^{″}+{y}^{\prime }+y=0$

•  ${y}^{″}-2{y}^{\prime }+y=0$
•  ${y}^{″}+3y=0$

•  ${y}^{″}-10{y}^{\prime }+29y=0$
•  ${y}^{″}-10{y}^{\prime }+25y=0$

2. ̔
•  ${y}^{″}-{y}^{\prime }-2y=4{x}^{2}$
•  ${y}^{″}-{y}^{\prime }=-3{x}^{2}$

•  ${y}^{″}-{y}^{\prime }-2y=4{e}^{3x}$
•  ${y}^{″}+4y=4cos2x$

•  ${y}^{″}-{y}^{\prime }-2y=18x{e}^{2x}$
•  ${y}^{″}-2{y}^{\prime }+2y=2{e}^{x}cos2x$

•  ${y}^{″}-{y}^{\prime }-2y=9{e}^{2x}$
•  ${y}^{″}+{y}^{\prime }-2y={e}^{x}+2x$

•  ${y}^{″}+2y=2{x}^{2}$

3. ̎
•  $\left({D}^{2}-5D+6\right)y=18x$
•  $\left({D}^{2}-8D+15\right)y={e}^{4x}$

4. ̎vZ
•  $\frac{1}{D+2}cos3x$
•  $\frac{1}{D+2}cos3x+i\frac{1}{D+2}sin3x$

•  $\frac{1}{{D}^{2}+3D+2}{x}^{2}$
•  $\frac{1}{D+2}{x}^{3}$

•  $\frac{1}{{D}^{2}-D-2}\left({x}^{2}-2x-3\right)$
•  $\frac{1}{{D}^{2}-3D+2}2{x}^{2}$

•  $\frac{1}{{D}^{2}+2D+8}sin2x$

z[>>JeS[>>>>>>艉K>>2K

wX^bt쐬

ŏIXVF 2022N422