已知4x=3y，那么x：y=______：______．
举一反三
- 已知4X＝3Y那么X:Y=?
- 如下C程序的输出是什么？#include [stdio.h]void Func1 (int x, int y);void Func2 (int *x, int *y); int main() { int x = 3; int y = 4;Func1 (x, y); printf ("x = %d, y = %d\n", x, y);Func2(&x, &y); printf ("x = %d, y = %d\n", x, y);} void Func1 (int x, int y) { x = x + y; y = x - y; x = x - y; printf ("x = %d, y = %d\n", x, y);} void Func2 (int *x, int *y) { *x = *x + *y; *y = *x - *y; *x = *x - *y;;} A: x = 3, y = 4x = 3, y = 4x = 3, y = 4 B: x = 4, y = 3x = 4, y = 3x = 4, y = 3 C: x = 3, y = 4x = 3, y = 4x = 4, y = 3 D: x = 4, y = 3x = 3, y = 4x = 4, y = 3
- \( \lim \limits_{(x,y) \to (2,1)} (4x - 3y) =\)______ 。
- \(\lim\limits_{(x,y)\to(3,2)}(4x - 3y) =\)______ 。
- 已知X的平方加Y的平方等于4,求4X加3Y的最大值与最小值