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Câu 40:

Cho cấp số cộng $({u_n})$

Câu 40: Cho cấp số cộng (un)({u_n})(un​) thỏa mãn :$\left\{ {\begin{array}{*{20}{c}}{{u_2} - {u_3} + {u_5} = 10}\\{{u_4} + {u_6} = 26}\end{array}} \right.$. Xác định công sai ?

Thông tin câu hỏi

Câu 40:

Cho cấp số cộng $({u_n})$ thỏa mãn :$\left\{ {\begin{array}{*{20}{c}}{{u_2} - {u_3} + {u_5} = 10}\\{{u_4} + {u_6} = 26}\end{array}} \right.$. Xác định công sai ?