Answer:
a.
b
Step-by-step explanation:
1.
Auxillary equation
D=2,2
Then complementary solution =
Particular solution
D is replace by D+2 then we get
P.I=
P.I=
where V is a function of x
P.I=
By integrating two times
Hence, the general solution
b.y''+9y=5 cos x-7 sin x
Auxillary equation
D=
P.I=
P.I=
Then D square is replace by -a square
is replace by - then we get
P.I=-5 cos x+7 sin x
The general solution
Answer:
The diameter is 40
Step-by-step explanation:
Answer:
provided above.
Step-by-step explanation:
thesw are the basic rules when these lines are parallel
Answer:
20x+21y+14
Step-by-step explanation:
Combine like terms:
150x-80y+50-50x-25y+20=
100x-80y+50-25y+20=
100x-105y+50+20=
100x-105y+70
100x-105y+70 can be divided by 5 and get 20x+21y+14.