Make a conclusion by induction for the following number sequences.a) -4, -1, 4, 11, ...,-4=1^2-5, -1=2^2-5, 4=3^2-5, 11=4^2-5, b) 4, 5, 7, 11, ..., 4=2^0+3, 5=2^1+3, 7=2^2+3, 11=2^3+3, c) 5, 12, 21, 32, ..., 5=4(1)+1, 12=4(2)+4, 21=4(3)+9, 32=4(4)+16, d) 3, 8, 17, 30, ..., 3=3(1)+2(0)^2, 8=3(2)+2(1)^2, 17=3(3)+2(2)^2, 30=3(4)+2(3)^2

Malcolm Gregory

Malcolm Gregory

Open question

2022-08-17

Make a conclusion by induction for the following number sequences.
a) 4, 1, 4, 11, 
4=125
1=225
4=325
11=425
b) 4, 5, 7, 11, 
4=20+3
5=21+3
7=22+3
11=23+3
c) 5, 12, 21, 32, 
5=4(1)+1
12=4(2)+4
21=4(3)+9
32=4(4)+16
d) 3, 8, 17, 30, 
3=3(1)+2(0)2
8=3(2)+2(1)2
17=3(3)+2(2)2
30=3(4)+2(3)2

Answer & Explanation

Payten Daniels

Payten Daniels

Beginner2022-08-18Added 11 answers

Step 1
a) Given sequency 4, 1, 4, 11, 
first term t1=4125
second term t2=1225
third term t3=4325
fourth term t4=11425
nthterm tn=n25
b) Given Sequaence 4, 5, 7, 11, 
first term t1=420+3
second term t2=521+3
third term t3=722+3
fourth term t4=1123+3
nthterm tn=2n1+3
Braeden Valenzuela

Braeden Valenzuela

Beginner2022-08-19Added 3 answers

Step 1
c) 5, 12, 21, 32. 
first term
t1=5=4(1)+1=4(1)+12
second term
t2=12=4(2)+4=4(2)+22
third term
t3=21=4(3)+9=4(3)+32
fourth term
t4=32=4(4)+16=4(4)+42
nth term tn=4(n)+n2
c) 3, 8, 17, 30, 
first term
t1=3=3(1)+2(0)2
second term
t2=8=3(2)+2(1)2
third term
t3=17=3(3)+2(2)2
fourth term
t4=30=3(4)+2(3)2
nth term tn=3(n)+2(n1)2

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