匿名用户 2021-09-18 00:42 数学类Mathematics

Compare the size of |In|[(+t) ]"dt and In dt(n=1,2,…)1 Jo give reasons. Compare the size of In[ In(+t) ]"dt 5t" Int dt(=... 查看全部

匿名用户 2021-09-18 00:41 数学类Mathematics

Find the interval and extremum of monotone f(x)=(x2-t).

匿名用户 2021-09-18 00:40 数学类Mathematics

Let the probability distribution of random variable X be P(=k=,=, 1, 2,", to calculate E(X).

匿名用户 2021-09-18 00:39 数学类Mathematics

Let =(1,2,-1,0),=(1,1,0,2), =(, 2,1,0), If the dimension of the vector space generated by a1, a2, a3 is 2, calculate a.

匿名用户 2021-09-18 00:39 数学类Mathematics

Let={(x,y,z)|x2+y2≤z≤1}, what is the vertical coordinate of the centroid of.

匿名用户 2021-09-18 00:38 数学类Mathematics

Given that the equation of curve L is y=1-x (xE[-1, 1]), starting at (-1,0) and ending at(,o), compute the surface integ... 查看全部

匿名用户 2021-09-18 00:37 数学类Mathematics

2 To calculate xcos vxdx0

匿名用户 2021-09-18 00:37 数学类Mathematics

x=e Let y=In( +), to calculater dxIt=

匿名用户 2021-09-18 00:36 数学类Mathematics

Let fi(x) be the probability density of the standard normal distribution, and f2(x) be the probability density of the un... 查看全部

匿名用户 2021-09-18 00:35 数学类Mathematics

0x<0 Let the distribution function of random variableX F(x)=,0≤x<1,t calculate P{= 1).1-e-x,x≥1,