如图所示 4.[判断题]-|||-^p=2x, =dfrac (1)(3)(x)^3+(c)_(1)x+(c)_(2) 是原方程的通解-|||-例 对-|||-B 错

() 6.微分方程 ^m=(e)^x 的通解为:-|||-(A) =(C)_(1)(e)^x+(C)_(2)x+(C)_(3); (B) =(C)_(1)(e)

微分方程 dfrac (dy)(dx)=y+(x)^3 的通解是 ()-|||-A) dfrac ({x)^3}(4)+dfrac (c)(x)-|||-B d

[题目] lim _(xarrow +infty )dfrac ({x)^3+(x)^2+1}({2)^x+(x)^3}(sin x+cos x)= __

x .-m -1 O-|||--x m 1 =(a)_(4)(x)^4+(a)_(3)(x)^3+(a)_(2)(x)^2+(a)_(1)x+(a)_(0) ,

5.微分方程 ^m=0 的通解为 __ -|||-(A) =(c)_(1)(x)^2+(c)_(2)x; (B) =(c)_(1)x+(c)_(2) : (C)

1/37 判断题(分值2.0分,难度:易)-|||-((sin x))^2=dfrac (1-cos 2x)(2)-|||-错-|||-对

int (x+2)xdx=()A、dfrac(1)(3)(x)^3+(x)^2+CB、dfrac(1)(3)(x)^3+2(x)^2+CC、dfrac(1)(2

(B) dfrac (1)(2)(X)_(1)+dfrac (1)(2)(X)_(2)-|||-(C) dfrac (1)(2)(X)_(1)+dfrac (1

(int )_(-1)^2x|x|dx=(int )_(-1)^1x|x|x+(int )_(1)^2x|x|x|=0+(int )_(1)^2(x)^2dx

方程组 ) (x)_(1)+(x)_(2)+(x)_(3)=1 (x)_(1)+2(x)_(2)-(x)_(3)=2 (x)_(1)+k(x)_(2)+(x)