Tích phân b ∫ a 5^x dx bằng:
Giải thích
\(\int\limits_a^b {{5^x}dx} = \left. {\frac{{{5^x}}}{{{\rm{ln}}5}}} \right|_a^b = \frac{{{5^b}}}{{{\rm{ln}}5}} - \frac{{{5^a}}}{{{\rm{ln}}5}} = \frac{{{5^b} - {5^a}}}{{{\rm{ln}}5}}\). Chọn B.
\(\int\limits_a^b {{5^x}dx} = \left. {\frac{{{5^x}}}{{{\rm{ln}}5}}} \right|_a^b = \frac{{{5^b}}}{{{\rm{ln}}5}} - \frac{{{5^a}}}{{{\rm{ln}}5}} = \frac{{{5^b} - {5^a}}}{{{\rm{ln}}5}}\). Chọn B.