(1.1 )给定三个矢量A、B和C如下:-|||-=(e)_(x)+(e)_(y)2-(e)_(2)3-|||-=-(e)_(y)+(e)_(2)-|||-=(e)_(x)5-(e)_(2)2-|||-:(1)eA;(2) |A-B| ;(3)A·B;(4)θA B;(5)A在B上的分量;(6) times C;-|||-(7) cdot (Btimes C) 和 (Atimes B)cdot C ;(8) (Atimes B)times C 和 times (Btimes C)

1.1 给定三个矢量A、B和C如下:-|||-=(e)_(x)+(e)_(y)2-(e)_(z)3-|||-l =-(e)_(y)+(e)_(z)-|||-=(

()-|||-A (X)=0, E(Y)=2-|||-B (x)=2, E(Y)=0-|||-C (X)=3, E(Y)=1-|||-D (x)=1 E(Y)=

[题目]曲线 =(e)^2x 在 x=2 处切线的斜率是 ()-|||-A、e^4-|||-B、e^2-|||-C、2e^2-|||-D、2

给定三个矢量 A、B、C 如下:A = e_x 11 + e_y 9 + e_z 18, B = e_x 17 + e_y 9 + e_z 27, C = e_

设=5(x)^3-(2)^x+3(e)^x+2，则=5(x)^3-(2)^x+3(e)^x+2=( ).A.=5(x)^3-(2)^x+3(e)^x+2

(5)y=(e^x-e^-x)/(2).(5)$y=\frac{e^{x}-e^{-x}}{2}.$

1、方程 =(e)^2x-y ,y(0)=0 的解为 __-|||-(A ) (e)^y=(e)^2x+1 (B ) ^y=(Ce)^2x+x-|||-(C )

1.5 给定两矢量A=e_(x)2+e_(y)3-e_(z)4和B=-e_(x)6-e_(y)4+e_(z)，求Atimes B在C=e_(x)-e_(y)+e

(2)微分方程 (y)^n+y-y=0 的通解是 () .-|||-(A) =(C)_(1)(e)^x-(C)_(2)(e)^-2x (B) =(C)_(1)(

设 =(e)^xy+ln ((x)^2+(y)^2) 则（ ）A =(e)^xy+ln ((x)^2+(y)^2)B =(e)^xy+ln ((x)^2+(y)