Question

in Fi Xi..what meaning of "i"​

Answer 1

Step-by-step explanation:

i refers to factorial

1i =1 factorial=1

2i= 2 factorial=2

3i = 3 factorial= 3x2x1=6

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Answer 2

Let, Pi =fi xi

the term i here represents a variable i which can take any value from the set of natural numbers.

E.g. if i=1, then P(1) = f1 x1

which represents that the value of P at i = 1 is the product of the f1 (i.e., the first f) and x1 (i.e., the first x)

So, if i = n, then P(n) = xn fn

which is the product of (n)th x and (n)th f