222b(x+2)xdx
举一反三
- ∫(x+2)xdx
- 已知\( y = \tan x \)，则\( dy \)为（ ）. A: \( \tan xdx \) B: \( \cos xdx \) C: \( {\sec ^2}xdx \) D: \( \sin xdx \)
- 将多项式2x4一x3-6x2一x+2因式分解为(2x一1)q(x)，则q(x)等于( )． A: (x+2)(2x一1)2 B: (x一2)(x+1)2 C: (2x+1)(x2一2) D: (2x—1)(x+2)2 E: (2x+1)2(x一2)
- 计算 [img=97x44]17da60e3e6579e9.png[/img]实验命令为(). A: limit(log(x^2-3)/(x^2-3*x+2),2)ans =4 B: syms x; limit(log(x^2-3)/(x^2-3*x+2),2)ans =4 C: syms x; limit(logx^2-3/(x^2-3*x+2),x,2)ans =4
- (1)方程x(x＋2)=2(x＋2)的根是________．(2)方程的根是________．