-0

(0(0(0y=sinx+4/sinx在012

(0(0(0y=sinxcosx(sin^3x+cos^3x)=sinxcosx(sinx+cosx)(sin^2x-sinxcosx+cos^2x)=(1-sinxcosx)sinxcosx*(si

-0-0-0（1）a正极,b负极,c阴极,d阳极,e阳极锌,f阴极铁c显红色,氢氧根增多,cd为电解饱和食盐水,c:2H++2e=H2(气体符号),f:2Cl--2e=Cl2(气体符号),所以a正极b

：0：0：00

(0(0(0范围应该是:(0,π]∵x∈(0,π]设t=sinx,t∈(0,1]y=sinx+4/sinx即：y=t+4/tt∈(0,2]上是减函数∴当t=1时,即x=π/2时y(min)=1+4=5

-0--0--0-吃惊吧--

>0>0>0

:0:0:0换元令t=sinxt∈(0,1)y=t+2/t这个是对勾函数,在（0,1)上递减t=1时,y=3所以y=sinx+2/sinx的值域（3,+∞）令t=sinx因为0所以t∈(0,1)y=t

0||0||0||0||0||0||表示图纸的大小长X宽1号图:841X594(mm),也就是A1纸.2号图:594x420(mm),也就是A2纸.3号图:420x297(mm),也就是A3纸.4号图

图形智力题0000000000000000000000000000000000从哪开始都可以,最后落在叉上,每个圈必须而且只能经过一次,不能重复不能画斜线,一笔连下来.图形智力题00000000000

8000300000030000000000000000070500600100049000500000000000100000709005002408000008000300000030000000

挑战智商的智力题000X000000000000000000000从哪开始都可以,最后落在叉上,每个圈必须而且只能经过一次,不能重复不能画斜线,一笔连下来.挑战智商的智力题000X0000000000

unsignedchartmp2[14]=0,0,0,0,0,0,0,0,0,0,0,0,0,0;cpuPoker[index][ind[i]].num=0;lcdscore->display(sco

24圆圈,一笔怎么样连成?000000000000000000000000如上图,不允许斜线和对角,空的哪个圆圈不让过.只允许上下直线连,一笔连成,谁知道怎么连,谢谢~~!00000000000000

如何一笔连成24个圆圈000000000000000000000000如何一笔连成24个圆圈000000000000000000000000如何一笔连成24个圆圈0000000000000000000

上三角行列式00000100002*0003**004***05****求值相反的下三角这么求呢?000010002*003**04***5****=a11A11+a21A21+a31A31+a41A

独立事件会发生的概率001020000000100000000200010000000110001000000000000000011210001200000011000201000000220010

*****1****20***300**4000*50000600000求6阶行列式,等于-6!怎么解刚入门不懂*****1****20***300**4000*50000600000求6阶行列式,等

D3=0````````0100````````200````````````N-1`````0000````````00N计算行列式,D3=0````````0100````````200`````

0+0+0+0+^+^=22.60+0+^+^+^+^=24.20+0+0+0+^+^=22.60+0+^+^+^+^=24.20+0+0+0+^+^=22.60+0+^+^+^+^=24.20=3.