Suppose {an} n e No is a sequence and c is an integer, c ≥ 11.
Which ones of the following summation expressions are equal to Σc k= 11αk ?
a. Σᶜ k=0 αk - Σ¹⁰ k= 0αk
b. Σᶜ k=0 αk - Σ¹¹k=0 αk
c. Σᶜ k=0 αk - Σᶜ⁻¹k=0 αk
d. Σᶜ k=1 αk - Σ¹⁰ k=1 αk
e. Σᶜ k=1 αk - Σ¹⁰ k=0 αk