S(3eˇx-4cosx+3xˇ2-4x+2)dx=3eˇx-4sinx+3.xˇ3/3-4.xˇ2/2+2x+c=
=3.eˇx -4.sinx +xˇ3-2.xˇ2+2x+c
Seˇxdx=eˇx (+c),Scosx dx = sinx (+c),Sk.dx =k.x (+c),
<span>2a -( 14-3a)=-10
5а-4=0
а=0,8
</span>(9-2b)-(b+5)=16
-3b-12=0
b=-4
1) а5=4; a5=a1+4d ; a1+4d=4; a1=4-4d.
a10=24; a10=a1+9d; a1+9d=24
4-4d+9d=24; 5d=20; d=4
Ответ:4
2) а2=4; a2=a1+d; a1+d=4; a1=4-d.
a9=18; a9=a1+ 8d; a1+8d=18; 4-d+8d=18; 7d=14; d=2
Ответ: 2