Please do all parts, clearly label and separate each part. please write clearly
ID: 2887674 • Letter: P
Question
Please do all parts, clearly label and separate each part. please write clearly or type.
Explanation / Answer
The exact location from where a portion of the table is being removed, is illustrated in the picture.
In the first step
Table removed = L/4
Total table removed = L/4
Table remaining = 3L/4
In the second step
Table removed = L/8
Total table removed = L/4+L/8 = 3L/8
Table remaining = 5L/8
In the third step
Table removed = L/16
Total table removed = L/4+L/8+L/16 = 7L/16
Table remaining = 9L/16
This process will be continued. We notice that after each successive step, the portion of the remaining table is decreasing as some part of the table is being removed. However, it is noteworhty that in each successive step, the poriton of the table being removed is also decreasing by a factor of '1/2'
Thus, total length rmeoved if the process goes on forever = L/4+ L/8 + L/16+.....
Now we will have to check if this sum eventually becomes =L and if it does then the table will disappear.
L/2+L/4+L/8+L/16 .... forms an infintie Geometric Progression with first term (a) = L/4 and common ratio (r) =1/2
Thus, sum of an infinite GP = a/(1-r) = L/4 / (1-1/2) = L/4/(1/2) = L/4 * 2 = 2L/4 = L/2;
Thus, if the process continues forever, then the total length of the table removed = L/2;
Hence, we can say that the table will not disappear.