(log2^5+log4^0.2)(log5^2+log25^0.25)化简

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(log2^5+log4^0.2)(log5^2+log25^0.25)化简

(log2^5+log4^0.2)(log5^2+log25^0.25)化简
(log2^5+log4^0.2)(log5^2+log25^0.25)化简

(log2^5+log4^0.2)(log5^2+log25^0.25)化简

问下,^这个是什么?
log2^5这个是不是指log以2为底的5的对数?


如果是的话,那么化简如下:
[log2(5)+log4(0.2)]×[log5(2)+log25(0.25)] 注: log后为底数,括号内为真数。
=[log2(5)+log4(2/10)]×[log5(2)+log25(1/4)]
=...

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问下,^这个是什么?
log2^5这个是不是指log以2为底的5的对数?


如果是的话,那么化简如下:
[log2(5)+log4(0.2)]×[log5(2)+log25(0.25)] 注: log后为底数,括号内为真数。
=[log2(5)+log4(2/10)]×[log5(2)+log25(1/4)]
=[log2(5)+log4(2)-log4(10)]×[log5(2)+log5的平方(4的负一次方)]
=[log2(5)+½log2(2)-½log2(10)]×[log5(2)-log5(2)]
=0


如果^是平方的意思的话,那么化简如下:
[log2²(5)+log4²(0.2)]×[log5²(2)+log25²(0.25)] 注: log后为底数,括号内为真数。
=[½log2(5)+¼log2(2/2/5)]×[½log5(2)+log5的4次方(1/4)]
=[½log2(5)+¼log2(2)-¼log2(2)-¼log2(5)]×[½log5(2)-½log5(2)]
=0

是不是题目错了?,还是我算错了,后面那个式子不管是^平方还是不是平方都为0
如果错了,请帮忙指错。。

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