If you got that answer, you probably handled the sum correctly.
/ᐠ｡ꞈ｡ᐟ\/ᐠ｡ꞈ｡ᐟ\/ᐠ｡ꞈ｡ᐟ\
A quick question: does the variable \(i\) represent the imaginary number whose square is \(-1\), or is it simply a variable?
I think that the answer is \(\dfrac{9}{10}\)
