Question

Can someone help me?

Answer 1

@ParthKohli

Answer 2

@amistre64

Answer 3

@hba

Answer 4

what does an explicit tell us?

Answer 5

explicits tell us how to find Xn in terms of n; implicits have us trying to find some other term to play with.

Answer 6

if this makes sense, which ones would you choose for explicits?

Answer 7

A D and E

Answer 8

good guess, i would classify all those as 'not' explicit :)

Answer 9

Ohhh so it's B and C because of time..?

Answer 10

it has nothing to do with time. it has everything to do with the way the equation is defined by prior terms:
\[X_n=X_{n-1}~:~implicit\]need to know the term before it to process


\[X_n = 4n~:~explicit\]all we need to know is n ... and possibly some other constant factors.

Answer 11

stuff like X1 and P1 that they placed in there are deemed constants by default.

Answer 12

So it is B and C(:?

Answer 13

Or A and C?
@amistre64

Answer 14

B and C are explicit; since ADE are implicit it wouldnt make sense to say A is also explicit.