1.计算:(1+(2^(-1/8))(二的负八分之一次幂))(1+(2^(-1/4)))(1+(2^(-1/2)))
问题描述:
1.计算:(1+(2^(-1/8))(二的负八分之一次幂))(1+(2^(-1/4)))(1+(2^(-1/2)))
2.已知f(x)=x^a,且f(x)的图像过点(8,1/4),求f(27)的值
答
1(1+(2^(-1/8))(二的负八分之一次幂))(1+(2^(-1/4)))(1+(2^(-1/2)))=(1+(2^(-1/8))(二的负八分之一次幂))(1+(2^(-1/4)))(1+(2^(-1/2))) *(1-(2^(-1/8))/(1-(2^(-1/8))=[1-2^(-1)]/[1-2^(-1/8)]=...