5.求解下列方程:-|||-x+1 2 -1-|||-(1) 2 x+1 1 =0;(2)-|||--1 1 x+1-|||-互不相等.-|||-=0,其中a,b,c

5.求解下列方程:-|||-x+1 2 -1-|||-(1) 2 x+1 1 =0;-|||--1 1 x+1

3.求解下列方程.-|||-x+1 2-|||-(1) 2 x+1 } -1 1 x+1

1 1 1 1-|||-()-|||-x a b C-|||-x^2 a^2 b^2 c^2 .=0 ,其中a,b,c互不相等.-|||-x^3 a^3 b^3

微分方程(x+1)y-2y=((x+1))^2 的通解 A (x+1)y-2y=((x+1))^2B (x+1)y-2y=((x+1))^2C (x+1)y-

行列式1 -1 1 x-1-|||-1 -1 x+1 -1-|||-1 x-1 -1 0-|||-x+1 -1 0 0的值为1 -1 1 x-1-|||-1 -

求定积分：∫(;)_(0)^2f（x）dx，其中f（x）={x+1，x≤1)(1)/(2){x)^2，x＞1}.．求定积分：∫${\;}_{0}^{2}$f（x

(2) lim _(xarrow infty )((dfrac {x+1)(x-1))}^-dfrac (x{2)}= () ;-|||-(A)1 (B) ^d

1.设 (dfrac (1)(x))=x((dfrac {x)(x+1))}^2, 则 f(x)= ()-|||-(A) dfrac (1)(x)((dfrac

7.求解下列方程:-|||-(1) ((x)^2-1)y-xy+1=0;-|||-(2) ((x)^2-1)y-(2(x)^2-1)y+(x)^3=0;-|||

4、微分方程 +xydy=(y)^2dx+ydy 的通解为-|||-A、 ^2+1=C((x-1))^2 B、 ^2-1=C(x+1)-|||-C、 ^2-1=