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Given a =25, b =-3, the last digit of a99+b100 is ______.
A=25, b=-3,
∴2599+(-3)100
=2599+(-3)25×4
=2599+[(-3)4]25
=2599+8125,
5 Is 5,1 is 1,
2599+8125 Is 5+1=6.
A=25, b=-3,
∴2599+(-3)100
=2599+(-3)25×4
=2599+[(-3)4]25
=2599+8125,
5 Is 5,1 is 1,
The last digit of 2599+8125 is 5+1=6.
Given that the xth power of 2 is less than or equal to 256, and the logarithm of X based on 2 is greater than or equal to 0.5, calculate the maximum and minimum values of the function FX=log2(X/2).log root 2(root x/2) Given that the xth power of 2 is less than or equal to 256, and the logarithm of X based on 2 is greater than or equal to 0.5, find the maximum and minimum values of the function FX=log2(X/2).log root 2(root x/2)
2^X = root 2
So root number 2
According to the question:2^x = root 2
So root number 2
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