25 POINTS HELP NOW Twenty is 10% of what number? Enter your answer in the box
2 answers:
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Step-by-step explanation:
Each term is 2 more than the previous term, and the first term is 12, so the recursive formula is:
This is an arithmetic sequence, so the explicit formula is:
The next three terms are 20, 22, 24.
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