Let the function y=f(x) be determined by the equation y'+xy +xy+=0, and find the extreme value of f().
2021-09-27 15:33
0
赞同1
回答[t2(e-1)-t]d To calculate the limit lim∞ xIn
2021-09-27 15:32
0
赞同1
回答r2xx>0 Let's say the probability density of population X is f(x, 0)= 302'0, other. where 0 is an unknown parameter,,,... 查看全部
2021-09-27 15:32
0
赞同1
回答Let the negative inertia exponent of quadratic(1,x2,x3)=x-x2+2ax1x3+4x2x3be 1, find the range of a.
2021-09-27 15:31
0
赞同1
回答Let L be the intersection of the cylinder x2+y2 =1 with the plane y + =0, from the positive direction of the z axis to t... 查看全部
2021-09-27 15:31
0
赞同1
回答Compute the solution of the differential equation xy'+y(Inx-iny)=0 satisfying the condition y(1)-e3
2021-09-27 15:30
0
赞同1
回答Let f(x) be a differentiable odd function of period 4, and f'(x)=2(x-1), XE[0,2], to calculatef(7)
2021-09-27 15:30
0
赞同1
回答Compute the tangent plane equation of surface z =x2(1-siny)+y2(1-sinx) at the point(1,0,1).
2021-09-27 15:29
0
赞同1
回答Let random events A and B be independent, and P(B)=0.5,P(A-B)= 0.3, then calculate P(B- A).
2021-09-27 15:29
0
赞同1
回答a b 0 To calculate the determinant a 0 0 b d c d
2021-09-27 15:28
0
赞同1
回答
匿名用户