Here is the code: (WEEK 3 Problem 2 Part 6)

```
def calc_sum(x,N):
sum=1
for i in range(N):
sum+=calc_1(x,N))
return sum
i=float(input("Enter x: "))
j=int(input("Enter N: "))
print(calc_sum(i,j))
def diff(x2,N2):
calc=float(calc_sum(x2,N2)-calc_sum(x2,N2-1))
while calc>0.01:
sum1=calc_sum(x2,N2)
return sum1
a=float(input("Enter x: "))
b=int(input("Enter N: "))
print (diff(a,b)
```

Output:

Error-local variable ‘sum1’ referenced before assignment