Question 142
The real solutions of the equation $x^{4}-x^{3}-2 x-4=0$ are the first two terms of a decreasing arithmetic sequence with 40 terms.
a) Compute the first two terms and the common difference of the sequence.
b) Compute the last term and write the general term $a_{n}$ of the sequence.
c) Compute the sum of all terms of the sequence with odd indices.
a) Compute the first two terms and the common difference of the sequence.
b) Compute the last term and write the general term $a_{n}$ of the sequence.
c) Compute the sum of all terms of the sequence with odd indices.