∫(1→3)x^3·dx 求积分
人气:250 ℃ 时间:2020-05-01 14:47:08
解答
对于x^n的积分,
显然有公式
∫ x^n dx=1/(n+1) *x^(n+1) ,n不等于 -1
所以
∫(1->3) x^3 dx
= 1/4 *x^4 代入上下限3和1
=1/4 *(3^4 -1)
=80/4
=20
推荐
猜你喜欢
- How is the weather in London?It is very ( ) A,good B,rainy
- 求陆游写的沁园春·雪全诗
- 一门简单的学科的英文
- 病句:王宁发言积极,每逢老师提问,总是答得对答如流.
- 连词成句:thirteen I now old am years
- In the morning they ___brakefast at home?原因.
- when he stayed in beijing=during his ____ in beijing
- 在空间四边形ABCD中,M,N分别为AB,CD的中点,且AD=4,BC=6,MN=根号下19,则AD与BC所成的角为