matlab基础教程第一章练习操作.doc

pi*52*10ans = 785.3982 s=pi*52s = 78.5398 s=*pi*52? s=*pi*52 |Error: Missing variable or function. v=s*10v = 785.3982 s=*pi*52;? s=*pi*52; |Error: Missing variable or function. s=pi*52; v=s*10v = 785.3982 a=1;b=2;c=sqrt(3); cos_a=(a2+b2-c2)/(2*a*b)cos_a = 0.5000 a=acosd(cos_a )a = 60.0000 a=8,1,6;3,5,9;4,9,2a = 8 1 6 3 5 9 4 9 2 a=8,1,6;3,5,9;4,9,2; b=:2:3? b=:2:3 |Error: Missing variable or function. b=:,2:3? b=:,2:3 |Error: Missing variable or function. b=:,2:3? b=:,2:3 |Error: Missing variable or function. b=roumd(rand(3)*10)? Undefined command/function roumd. b=round(rand(3)*10)b = 4 9 4 6 7 9 8 2 9 c1=a*bc1 = 86 91 95 114 80 138 86 103 115 c2=a.*bc2 = 32 9 24 18 35 81 32 18 18 c3=a2c3 = 91 67 69 75 109 81 67 67 109 c4=.a2? c4=.a2 |Error: Missing variable or function. c4=a.2c4 = 64 1 36 9 25 81 16 81 4 a=87,b=190;a = 87 a+bans = 277 a-bans = -103 a*bans = 16530 a=uint8(87);b=uint8(190); a+bans = 255 a-bans = 0 a*bans = 255 sind(60)ans = 0.8660 exp(3)ans = 20.0855 cos(3*pi/4)ans = -0.7071 u=2;v=3; 4*u*v/logv? Undefined function or variable logv. 4*u*v/log(v)ans = 21.8457 (exp(u)+v)2/(v2-u)ans = 15.4189 sqrt(u-3*v)/u*vans = 0 + 3.9686i (3-5*i)(4+2*i)? (3-5*i)(4+2*i) |Error: Unbalanced or misused parentheses or brackets. (3-5i)(4+2i)? (3-5i)(4+2i) |Error: Unbalanced or misused parentheses or brackets. (3-5*i)*(4+2*i)ans = 22.0000 -14.0000i sin(2-