MCQ
$\int_{ - a}^a {\frac{1}{{x + {x^3}}}dx} =$
- ✓$0$
- B$\int_0^a {\frac{1}{{1 + {x^6}}}\;} dx$
- C$2\int_0^a {\frac{1}{{1 + {x^3}}}\;} dx$
- D$\int_0^a {\frac{1}{{1 + {{(a - x)}^3}}}\;} dx$
if $f( - x) = - f(x)$
Therefore, $\int_{ - a}^a {\frac{{dx}}{{x + {x^3}}}} = 0$.
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