Fiona has proved that a function, f(x), is an arithmetic sequence. How did she prove that?

She showed that an explicit formula could be created.

She showed that a recursive formula could be created.

She showed that f(n) ÷ f(n - 1) was a constant ratio.

She showed that f(n) - f(n - 1) was a constant difference.

Question

Fiona has proved that a function, f(x), is an arithmetic sequence. How did she prove that?

She showed that an explicit formula could be created.

She showed that a recursive formula could be created.

She showed that f(n) ÷ f(n - 1) was a constant ratio.

She showed that f(n) - f(n - 1) was a constant difference.

the_fizicx99 · Answer

You sure about that?

lena772 · Answer

Actually I think it's D

lena772 · Answer

I misread the question at first

the_fizicx99 · Answer

Remember that arithmetic is the difference. Geometric is ratio.

lena772 · Answer

Arithmetic sequences have constant differences

lena772 · Answer

yea

lena772 · Answer

so it's D?

the_fizicx99 · Answer

Yes, A and B both require multiplication

lena772 · Answer

9/10

lena772 · Answer

The one with the water bottles was wrong.

the_fizicx99 · Answer

I did the exam twice and got the same Q wrong. :/

anonymous · Answer

Yes, it IS D (: