问题
选择题
下列推理正确的是[ ]
A.把a(b+c)与loga(x+y)类比,则有:loga(x+y)=logax+logay
B.把a(b+c)与sin(x+y)类比,则有:sin(x+y)=sinx+siny
C.把(ab)n与(a+b)n类比,则有:(x+y)n=xn+yn
D.把(a+b)+c与(xy)z类比,则有:(xy)z=x(yz)
答案
答案:D
下列推理正确的是[ ]
A.把a(b+c)与loga(x+y)类比,则有:loga(x+y)=logax+logay
B.把a(b+c)与sin(x+y)类比,则有:sin(x+y)=sinx+siny
C.把(ab)n与(a+b)n类比,则有:(x+y)n=xn+yn
D.把(a+b)+c与(xy)z类比,则有:(xy)z=x(yz)
答案:D