Cho a < b < c, \(\int\limits_a^b {f\left( x \right)dx = 5} ,\,\int\limits_c^b {f\left( x \right)dx = 2} \). Tính \(\int\limits_a^c {f\left( x \right)dx} \)

Name: Ôn Thi trắc nghiệm THCS, THPT
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A.A. \(\int\limits_a^c {f\left( x \right)dx = 7} \)

B.B. \(\int\limits_a^c {f\left( x \right)dx = - 2} \)