为什么dy/y=2dx/x+1,两遍积分结果是lin|y|=2lin|x+1|+lin|c|,而不是lin|y|=2lin|x+1|+c呢,lin|c|是怎么得
举一反三
- 直线命令的快捷键是( )(1)Line (2)Li (3)L (4)Lin A: (1)Line B: (2)Li C: (3)L D: (4)Lin
- 如下程序的运行结果是( ) int x = 1, y=1; if(x==1) y= x+1; else if(y==2) x= y+1; else y= 0;
- 如下程序的运行结果是( ) intx=1,y=1;if(x==1) y=x+1;elseif(y==2) x=y+1;else y=0; A: x=1, y=2 B: x=3, y=2 C: x=3, y=0 D: x=1, y=0
- Chen Lin: Good morning. You [1] ______ be Mr Lohmann. Martin: Yes, that’s right. Chen Lin: I’m Chen Lin, Mr Li’s personal [2]________. How do you do?
- 【单选题】下列的能正确求出“当x等于1时y等于x+1,z等于y”的if语句是() A. if(x==1); { y=x+1; z=y;} B. if(x==1) z=y; y=x+1; C. if(x=1) {z=y; y=x+1;} D. if(x==1) {z=y; y=x+1; }