世界上最难数学!
问题描述:
世界上最难数学!
设f(x)=3的X次方求证
1.f(x)乘以F(Y)=F(X+Y)
2.F(X)除以F(Y)=F(X-Y)
答
(1) f(x)=3^x
f(y)=3^y
f(x+y)=3^(x+y)
f(x)*f(y)=3^x*3^y=f(x+y)
(2)f(x)=3^x
f(y)=3^y
f(x)/f(y)=3^x/3^y=3^(x-y)=f(x-y)