题目
观察下列各式:1+2=3=2^2-1,1+2+2^2=7=2^3-1,1+2+2^2+2^3=15=2^4-1,1+2+2^2+2^3+2^4=31=2^5-1
(1)根据以上规律填空:
①1+2+2^2+2^3+2^4+2^5=( )=2^( )-1;
②1+2+2^2+2^3+……+2的n次方减1+2的n次方=2^()-1
(2)计算:2^4+2^5+……+2^100.
我打字打了很久啊 别让我失望呐
(1)根据以上规律填空:
①1+2+2^2+2^3+2^4+2^5=( )=2^( )-1;
②1+2+2^2+2^3+……+2的n次方减1+2的n次方=2^()-1
(2)计算:2^4+2^5+……+2^100.
我打字打了很久啊 别让我失望呐
提问时间:2021-03-20
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