0.25^-1 *(根号3/2)^1/2*(27/4)^1/4+㏒2 1/5×㏒3 1/8×㏒5 1/9

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/26 00:42:59
0.25^-1 *(根号3/2)^1/2*(27/4)^1/4+㏒2 1/5×㏒3 1/8×㏒5 1/9
x 0_IJ

0.25^-1 *(根号3/2)^1/2*(27/4)^1/4+㏒2 1/5×㏒3 1/8×㏒5 1/9
0.25^-1 *(根号3/2)^1/2*(27/4)^1/4+㏒2 1/5×㏒3 1/8×㏒5 1/9

0.25^-1 *(根号3/2)^1/2*(27/4)^1/4+㏒2 1/5×㏒3 1/8×㏒5 1/9
=4 *(根号3/2)^1/2**(3根号3/2)^1/2+(log5 (1/5)/log5 2)*(log5 (1/8)/log5 3)*(log5 1/9)
=4 *(根号3/2 * 3根号3/2)^1/2 + (-1)/(log5 2)*(-3log5 2)/(log5 3)*(-2log5 3) (抵消抵消抵消)
=4 *(9/4)^(1/2) + (-1)*(-3)*(-2)
=6-6
=0
补充说明:log a b=log c b/log c a