如果丨m丨=6ln丨=3,且m<n,求(m一n)÷若pe 5ef 求m的值值

&#xe621; 上传我的文档
&#xe602; 下载
&#xe60c; 收藏
该文档贡献者很忙,什么也没留下。
&#xe602; 下载此文档
正在努力加载中...
如图1、2、3···n,m、n分别是圆o的内接正三角形a1a2:as shown in figure 1, 2, 3, n,.
下载积分:1000
内容提示:如图1、2、3···n,m、n分别是圆o的内接正三角形a1a2:as shown in figure 1, 2, 3, n, m, n respectively is round o inscribed regular
文档格式:DOC|
浏览次数:24|
上传日期: 13:57:49|
文档星级:&#xe60b;&#xe612;&#xe612;&#xe612;&#xe612;
该用户还上传了这些文档
如图1、2、3···n,m、n分别是圆o的内接正三角形a1a2
官方公共微信Problem 17A
1) 38.7 cm 2) 58.5.cm 3) 1.15 m 4) -143 N 5) 3.50 x 10^-4 N6) 1.4 x 10^-3 N 7) 1.60 x 10^-19 C 8) 1.60 x 10^-19 C 9) 1.60 x 10^-19 C 10) 2.2 x 10^-17 C
Problem 17B
1) F(tot)=1.8 x 10^-10 N, 45? 2) 2.24 x 10^10 N pointing upward along the y-axis 3) F(tot)=1.74 x 10^-7 N, -21.22? 4) 3.84 x 10^-6 N directected along the -y axis 5) F(tot)=4.82 x 10^-19 N, 45? 6) F(tot)=4.53 x 10^-6 N, 26.6? 7) F(tot)=3.97 x 10^-8 N, 9.29? 8) F(x,tot)=7.2x10^4 N, F(y,tot)= -1.8 x 10^4 N, F(tot)=7.4 x 10^4 N, -14? 9) F(tot)=3.66 x 10^5 N, 45? 10) F(tot)=0 N along the x axis
Problem 17C
1) -1.7 x 10^-1 N 2) 18 N 3) 259 N 4) 16 cm 5) 36 cm 6) 7.3 cm
Problem 17D
1) -54 N in the -x direction 2) 7.5 x 10^-6 N in the +y direction 3) -3.29 x 10^-14 N upward 4) 4.40x10^5 N/C, 89.1? 5) 3.15 x 10^5 N/C 6) 5.06 x 10^-12 C 7) 1.61 x 10^-12 C 8) 3.6 x 10^-10 m 9) -0.67 mm 10) -1.37 x 10^-7 m
Section 17-1 Review, page 633
1) It is equal to the magnitude of the rod' Charge is conserved. 2) Charge is quantized. 3) 6.25 x 10^19 electrons 4) The taped induces a surface charge on the desk, so the two are attracted to one another. 6) More paint hits the object being painted because of an electrical attraction between the chargted droplets and the oppositely charged object.
Section 17-2 Review, page 642
1a) 4.4 N b) attractive c) 1.2 x 10^13 electrons 2) both are field forces, both are electric forces are attractive or repulssive whnile gravitational forces are always attractive, electric force is significantly stronger than gravitational force 3) 7.3 x 10^-8 N, along the negative x axis 4) 35.2 cm from q(1) (24.8 cm from q(2)) 5) new distance = 1/sqrt(2)(old distance)
Section 17-3 Review, page 652
1) 8.0 x 10^3 N/C, directed toward the 40.0 x 10^-9 C charge 2a) -3/8 b) q(1) q(2) is positive 3a) All lines should point away from the two charges, and one charge should have four time as many lines as the other. b) All lines should point toward the tow charges, and one charge should have four times as many lines as the other. 4) because charge accumulated at sharp points 5) They experience an electrical attraction that pulls them back toward the object.
Section 17-1 Worksheet
1a) Experiment A, no charges were transferred. Experiment B, charges were tranferred between the sphere and the ground. Experiment C, Charges were transferred between the sphere and the rod. b) Diagrams should show: Spher A, negative charges (-) on the left, positive (+) Sphere B, excess (-) Sphere C, excess (+) d) Experiment A e) no change in Experiment A or Experiment B; reduced charge in Experiment C
Section 17-2 Worksheet
1a) 20.0 cm b) 0.899 N (attraction along the line q(1)-q(3)) c) 0.899 N (attraction along the line q(1)-q(2)) d) 1.40 N repulsion pulling to the right e) Diagrams should show F(1) pointing from q(3) toward q(1) and F(2) pointing from q(3) toward q(2) f) 36.9? g) F(1x)=-0.709 N; F(2x)=0.719 N; F(1Y)=-0.540 N; F(2y)=-0.540 N h) -1.08 N pointing down i) downward along the y-axis
Section 17-3 Worksheet
1a) 21.2 cm b) all same strength of 1.60x10^-6 N/C along the diagonal lines, with E(1) pointing away from q(1), E(2) from q(2), E(3) from q(3), and E(4) from q(4) c) Resultant electric field E=0 2a) 4.61x10^-14 N down b) 4.61x10^-14 N up c) 1.44x10^-18 C d) 9 electrons当前位置:
>>>计算:(1)5log510-1;(2)已知ln2=m,ln3=n,求e2m+3n.-数学-魔方格
计算:(1)5log510-1;(2)已知ln2=m,ln3=n,求e2m+3n.
题型:解答题难度:中档来源:不详
(1)原式=5log5105=105=2;(2)∵ln2=m,ln3=n,∴em=2,en=3,∴e2m+3n=(em)2(en)3=22×33=108.
马上分享给同学
据魔方格专家权威分析,试题“计算:(1)5log510-1;(2)已知ln2=m,ln3=n,求e2m+3n.-数学-魔方格”主要考查你对&&对数函数的图象与性质&&等考点的理解。关于这些考点的“档案”如下:
现在没空?点击收藏,以后再看。
因为篇幅有限,只列出部分考点,详细请访问。
对数函数的图象与性质
对数函数的图形:
对数函数的图象与性质:
对数函数与指数函数的对比:
&(1)对数函数与指数函数互为反函数,它们的定义域、值域互换,图象关于直线y=x对称.&(2)它们都是单调函数,都不具有奇偶性.当a&l时,它们是增函数;当O&a&l时,它们是减函数.&(3)指数函数与对数函数的联系与区别: 对数函数单调性的讨论:
解决与对数函数有关的函数单调性问题的关键:一是看底数是否大于l,当底数未明确给出时,则应对底数a是否大于1进行讨论;二是运用复合法来判断其单调性,但应注意中间变量的取值范围;三要注意其定义域(这是一个隐形陷阱),也就是要坚持“定义域优先”的原则.
利用对数函数的图象解题:
涉及对数型函数的图象时,一般从最基本的对数函数的图象人手,通过平移、伸缩、对称变换得到对数型函数的图象,特别地,要注意底数a&l与O&a&l的两种不同情况,底数对函数值大小的影响:
1.在同一坐标系中分别作出函数的图象,如图所示,可以看出:当a&l时,底数越大,图象越靠近x轴,同理,当O&a&l时,底数越小,函数图象越靠近x轴.利用这一规律,我们可以解决真数相同、对数不等时判断底数大小的问题.&
2.类似地,在同一坐标系中分别作出的图象,如图所示,它们的图象在第一象限的规律是:直线x=l把第一象限分成两个区域,每个区域里对数函数的底数都是由右向左逐渐减小,比如分别对应函数,则必有 &&&&
发现相似题
与“计算:(1)5log510-1;(2)已知ln2=m,ln3=n,求e2m+3n.-数学-魔方格”考查相似的试题有:
291669474365338469393765337459339570注册结构工程师考试
1.选择试题2.注册/登陆3.开始答题4.提交试卷5.查看成绩6.答案解析
您的位置:&& && && && 试卷题库内容
试题来源:
1小题>试确定过梁承受的均布荷载设计值(kN/m),与下列何项数值最为接近? & &提示:墙体荷载计算时不计抹灰白重。A 18B 20C 22D 24正确答案:有, 或者 答案解析:有,2小题>试问过梁的受弯承载力设计值(kN&m),与下列何项数值最为接近?A 25B 21C 17D 13正确答案:有, 或者 答案解析:有,3小题>试问过梁的受剪承载力设计值(kN),与下列何项数值最为接近? & &提示:砌体强度设计值调整系数&a=1.0。A 12B 15C 22D 25正确答案:有, 或者 答案解析:有,
您可能感兴趣的试题
做了该试卷的考友还做了
······}

我要回帖

更多关于 求实数m的取值范围 的文章

更多推荐

版权声明:文章内容来源于网络,版权归原作者所有,如有侵权请点击这里与我们联系,我们将及时删除。

点击添加站长微信