If

then

The ODE in terms of these series is



We can solve the recurrence exactly by substitution:


So the ODE has solution

which you may recognize as the power series of the exponential function. Then

Answer:
Option C is correct.

Step-by-step explanation:
Given the expression: 
Using properties of summation:
Using properties of summation in the given expression we have;
= 
=
Therefore, the following given expression uses the properties of summation to represents is, 
Answer:
sorry
Step-by-step explanation:
It is a 1 in 13 chance of drawing at least 1 ace.