∫₋ₐ^a x³ dx equals (for any a):
- a⁴
- 0 (odd function over symmetric interval)
- a⁴/2
- 2a⁴
Show answer and solution
Correct answer: B. 0 (odd function over symmetric interval)
x³ is an ODD function.
Integral over symmetric interval [-a, a] of any odd function is 0. (Areas above and below x-axis cancel.)