Can a recursive formula have a negative common difference ??

Yes

Step-by-step explanation:

If you refer to common difference, then we are considering an Arithmetic Progression.

If the common difference of the arithmetic progression is negative, then the corresponding recursive formula will also have a negative common difference.

For instance, the common difference for

10,7,4,1,.... is -3.

The recursive formula is

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

250

step-by-step explanation: