i AM STUCK TRYING TO FIGURE THIS PROBLEM. SUMMATION NOTATION.
5 OVER A SIDEWAYS Z AT THE BOTTOM THERE IS N=2 AND ON THE SIDE THERE IS (5N+3) I came up with the answer 85
expanded it would be
if n = 2 I get 13
if n = 3 I get 18
if n = 4 I get 23
if n = 5 I get 28
that sum is 82, not 85
could you please show how you worked thid problem
I thought I just did.
n takes on integer values from n=2 to n=5
those values are subbed into the given expression 5n+3, they are then added.
so..
[sigma] (5n+3) from n=2 to n=5
= 13+18+23+28
= 82
To solve this problem involving summation notation, we need to understand the notation itself and then perform the necessary calculations.
In the given expression, the summation notation is represented by the symbol Σ, which stands for "sum." The expression is as follows:
Σ(5n+3) over a sideways Z, where n starts at 2 and increases sequentially.
To solve this, we start by substituting the value of n = 2 into the expression (5n+3):
5(2) + 3 = 10 + 3 = 13
Next, we move to the next value of n, which is n = 3, and substitute it into the expression:
5(3) + 3 = 15 + 3 = 18
We continue this process until we reach the desired value of n. From the given information, it does not specify the maximum value of n. Therefore, we cannot determine the exact solution.
However, if we assume n to be a specific value, such as n = 4, we can continue the calculations:
5(4) + 3 = 20 + 3 = 23
To find the sum using summation notation, we need to add up all the values we calculated:
13 + 18 + 23 = 54
So, based on the given information, the sum of the expression Σ(5n+3) with n starting at 2 would be 54, not 85.