Question

我是人類

想問這個怎麼積

2
)
32
x)dx
x +4-x) dx

Answer 1

✨ 最佳解答 ✨

qn

[32/2 arctan(x/2) - x³/3]₋₂²
= (16 arctan(1) - 8/3) - (16arctan(-1) + 8/3)
= 16·π/4 - 16·(-π/4) - 16/3
= 8π - 16/3