y=arcsin(2x/1+x)定义域
举一反三
- 函数\(y = {\left( {\arcsin x} \right)^2}\)的导数为( ). A: \(2\arcsin x{1 \over {\sqrt {1 - {x^2}} }}\) B: \( - 2\arcsin x{1 \over {\sqrt {1 - {x^2}} }}\) C: \(2\arcsin x{1 \over {\sqrt {1 + {x^2}} }}\) D: \( - 2\arcsin x{1 \over {\sqrt {1 + {x^2}} }}\)
- 函数$y = \arcsin (2x + 1)<br/>$的定义域为 ( ). A: $\{ \left. x \right| - 1 \le x \le 0\} <br/>$ B: $\{ \left. x \right| - \frac{1}{2} \le x \le 0\} <br/>$ C: $\{ \left. x \right|x \ge - \frac{1}{2}\} <br/>$ D: ${\rm{\{ }}\left. x \right|x \le 0\}<br/>$
- 如下程序的输出是什么? #include <stdio.h> void Swap (int x, int y);int main() { int x = 1; int y = 2; printf ("x=%d,y=%d\n", x, y); Swap (x, y); printf ("x=%d,y=%d", x, y); } void Swap (int x, int y) { int temp; temp = x; x = y; y = temp; printf ("x=%d,y=%d\n", x, y); }? x=1,y=2x=2,y=1x=2,y=1|x=1,y=2x=1,y=2x=2,y=1|x=1,y=2x=2,y=1x=1,y=2|x=1,y=2x=1,y=2x=1,y=2
- 如下程序的输出是什么? #include [stdio.h] void Swap (int x, int y); int main() { int x = 1; int y = 2; printf ("x=%d,y=%d\n", x, y); Swap (x, y); printf ("x=%d,y=%d", x, y); } void Swap (int x, int y) { int temp; temp = x; x = y; y = temp; printf ("x=%d,y=%d\n", x, y); } A: x=1,y=2x=2,y=1x=2,y=1 B: x=1,y=2x=1,y=2x=2,y=1 C: x=1,y=2x=2,y=1x=1,y=2 D: x=1,y=2x=1,y=2x=1,y=2
- 函数y=log2(2x−1)x−1的定义域为( )