• 2022-06-16
    (arccot(X))‘=1/(1-y²),(|y|>())
  • 1

    内容

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      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

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      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

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      设\(z = {e^ { { y \over x}}} + {x^y} + {y^x}\),则\({z_x} = \) A: \({1 \over x}{e^ { { y \over x}}} + {x^y}\ln x + x{y^{x - 1}}\) B: \(- {y \over { { x^2}}}{e^ { { y \over x}}} + {x^y}\ln x + x{y^{x - 1}}\) C: \({e^ { { y \over x}}} + y{x^{y - 1}} + {y^x}\ln y\) D: \( - {y \over { { x^2}}}{e^ { { y \over x}}} + y{x^{y - 1}} + {y^x}\ln y\)

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      能够完成如下函数计算的程序段是( )。[img=128x73]18038b85af5fc28.png[/img] A: y=1;if(x!=0) if(x>0) y=1; else y=0; B: if(x>=0) if(x>0) y=1; else y=0;else y=-1; C: y=0; if (x>=0) if (x>0) y=1; else y=-1; D: y=-1;if (x>0) y=1;else y=0;

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      计算:(1)x(y﹣1)﹣y(x﹣1);