设星光的有效波长为550 nm ,用一台物镜直径为1.20 m的望远镜观察双星时,能分辨的双星的最小角间隔[img=17x19]1803d3fd21f0d10.png[/img]是
A: [img=107x24]1803d3fd2c68c75.png[/img]
B: [img=99x24]1803d3fd3535b22.png[/img]
C: [img=107x24]1803d3fd3e2dd9f.png[/img]
D: [img=99x24]1803d3fd467da7f.png[/img]
A: [img=107x24]1803d3fd2c68c75.png[/img]
B: [img=99x24]1803d3fd3535b22.png[/img]
C: [img=107x24]1803d3fd3e2dd9f.png[/img]
D: [img=99x24]1803d3fd467da7f.png[/img]
举一反三
- 17da426f4cb2265.jpg,计算[img=23x22]17da426f58ddf0c.jpg[/img]实验命令为( ). A: f=diff(log(x),3)f=2/x^3 B: syms x; f=diff(log(x),3)f=2/x^3 C: syms x;f=diff(logx,3)f=2/x^3
- 17e0a756f3d6e2a.jpg,计算[img=23x22]17e0b849ab0b36c.jpg[/img]实验命令为( ). A: f=diff(log(x),3)f=2/x^3 B: syms x; f=diff(log(x),3)f=2/x^3 C: syms x;f=diff(logx,3)f=2/x^3
- 设 f(x)=1-2x,g(f(x))=(1-x)/x ,则 [img=51x43]180349caea51829.png[/img] A: 0 B: 1 C: 2 D: 3
- 设 f(x)=1-2x,g(f(x))=(1-x)/x ,则 [img=51x43]180311a45a4ae1d.png[/img] A: 0 B: 1 C: 2 D: 3
- 设[img=127x53]17f1b3d6db98b83.jpg[/img],f(x)=arctanΧ,则[img=56x55]17f1b3d82842941.jpg[/img]=()。 A: π B: 3π/4 C: -3π/4 D: 2π