Post by segadragon on Apr 25, 2006 0:56:29 GMT
This is good math practice, so it can be the first post in this forum.
If you don't know what the Fibanacci Sequence is, it is a sequence of numbers where you add the previous two numbers to get the next number, starting with zero and one. If you didn't understand that, don't worry. Here's an example:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34
0+1=1
1+1=2
2+1=3
3+2=5
5+3=8
8+5=13
13+8=21
21+13=34
...and so on...
You've learned something, hopefully.
Now, put your Algebra skills to the test.
I solved this easily, but my best friend couldn't do it if his life depended on it.
a, b, c, d, 0, 1, 1, 2, 3, 5, 8
Solve for A.
Answer:
Since the pattern of the Fibanacci Sequence is a+b=c, b+c=d... then we'd simply go backwards.
d+0=1
Hence, d=1.
c+d=0
c+1=0 (since d=1)
c=-1 (subtract 1 from both sides)
b+c=d
b+(-1)=1 (since c=(-1) and d=1)
b-1=1 (since adding the negative is the same as subtracting the positive)
b=2 (add 1 to both sides)
a+b=c
a+2=-1 (since b=2 and c=(-1))
a=-3 (subtract two from both sides)
Simple. See how far you can go backwards and forwards with the Fibanacci Sequence.
If you don't know what the Fibanacci Sequence is, it is a sequence of numbers where you add the previous two numbers to get the next number, starting with zero and one. If you didn't understand that, don't worry. Here's an example:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34
0+1=1
1+1=2
2+1=3
3+2=5
5+3=8
8+5=13
13+8=21
21+13=34
...and so on...
You've learned something, hopefully.
Now, put your Algebra skills to the test.
I solved this easily, but my best friend couldn't do it if his life depended on it.
a, b, c, d, 0, 1, 1, 2, 3, 5, 8
Solve for A.
Answer:
Since the pattern of the Fibanacci Sequence is a+b=c, b+c=d... then we'd simply go backwards.
d+0=1
Hence, d=1.
c+d=0
c+1=0 (since d=1)
c=-1 (subtract 1 from both sides)
b+c=d
b+(-1)=1 (since c=(-1) and d=1)
b-1=1 (since adding the negative is the same as subtracting the positive)
b=2 (add 1 to both sides)
a+b=c
a+2=-1 (since b=2 and c=(-1))
a=-3 (subtract two from both sides)
Simple. See how far you can go backwards and forwards with the Fibanacci Sequence.
