问题
选择题
已知A=∫03|x2-1|dx,则A=( )
|
答案
A=∫03|x2-1|dx=∫01(1-x2)dx+∫13(x2-1)dx
=(x-
x3)|01-(x-1 3
x3)|131 3
=
.32 3
故选D.
已知A=∫03|x2-1|dx,则A=( )
|
A=∫03|x2-1|dx=∫01(1-x2)dx+∫13(x2-1)dx
=(x-
x3)|01-(x-1 3
x3)|131 3
=
.32 3
故选D.