兔兔

[sean]

the smartest person on the earth

have any shortcut

1*( 1.07^25 + 1.07^24 + 1.07^23 + .... ) =

 

[大熊猫]

等比数列的和啊.有公式的.

 

[DiegoAMaradona]

1*( 1.07^25 + 1.07^24 + 1.07^23 + .... ) = turkey solution

 

[sean]

我想知道结果

 

[胖蹄阿克]

前面还放1*干嘛

 

[Rabbit]

 

[sean]

1代表单位1,ZT

 

[sean]

我知道了！

 

[shusheng]

 10 let b = 1.07
 20 let sum = 0
 30 for x = 25 to 0 step -1
 40 let sum0 = 1
 50 for y = 1 to x
 60 let sum0 = sum0 * b
 70 next y
 80 let sum = sum + sum0
 90 next x
100 print "You got: "; sum

 

[sean]

( x^(y+1) - 1 ) / ( X - 1 )
or
1 * ( 1.07^(25+1) - 1 ) / (1.07 -1)

 

[忙里偷闲]

最初由 shusheng 发布

 10 let b = 1.07
 20 let sum = 0
 30 for x = 25 to 0 step -1
 40 let sum0 = 1
 50 for y = 1 to x
 60 let sum0 = sum0 * b
 70 next y
 80 let sum = sum + sum0
 90 next x
100 print "You got: "; sum

Wo Kao, BASIC a. I used to use it lot mayny many years ago.