Nếu \(\int \limits_a^d f\left( x \right)dx = 5,\int \limits_b^d f\left( x \right)dx = 2\)
với a < d < b thì \(\int \limits_a^b f\left( x \right)dx\) bằng
A. - 2
B. 8
C. 0
D. 3
Ta có:
\(\begin{array}{l}
\int \limits_a^b f\left( x \right)dx = \int \limits_a^d f\left( x \right)dx + \int \limits_d^b f\left( x \right)dx\\
= 5 - 2 = 3
\end{array}\)
Chọn D.
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