以下不能正确表示代数式2ad/cd的C语言表达式是

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1/3*sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5),2)/3 1/3.0*pow(sin(1.0.2),2)

1/3*sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5)，2)/3 1/3.0*pow(sin(1.0/2)，2)

1/3*sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5)，2)/3 1/3.0*pow(sin(1.0.2)，2)

1/3*sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5),2)/3 1/3.0*pow(sin(1.0/2),2)

2*8-*b/c/d a*b/c/d*2 a/c/d*b*2 2*a*b/c*d

1/3*sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5),2)/3 1/3.0*pow(sin(1.0/2),2)

sqrt(abs(n^x+e^) sqrt(fabs(pow(n，+pow(x，)) sqrt(fabs(pow(n，+exp()) sqrt(fabs(pow(x，+exp())

(a+*h/2 (1/2)*(a+*h (a+*h*1/2 h/2*(a+

1/3 * sin(1/2) * sin(1/2) SlH(0.5) * sin(0.5)/3 pow ( sin(0.5)，2)/3 1/3.0*pow(sin(1.0/2)，2)

2*a*b/c/d a*b/c/d*2 a/c/d*b*2 2*a*b/c*d

1/3,sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5),2)/3 1/3.0*pow(sin(1.0/2)，2)

4*a*b/c/e a*b/c/e*4 a/c/e*b*4 4*a*b/c*e

4 * c * d/a/b c * d/a/b* 4 c/a/b * d* 4 4* c* d/a, b

1/3*sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5),2)/3 1/3.0*pow(sin(1.0/2),2)

1/3*sin(1/2)*sin(1/2) sin(0.5)*sin(0.5)/3 pow(sin(0.5)，2)/3 1/3.0*pow(sin(1.0/2)，2)

2*a*b/c/d a*b/c/d*2 a/c/d*b*2 2*a*b/c*d