1. Find Cube root of 4096 using Babylonian method, with Initial guess x0 = 15Solution:Babylonian method for finding cube roots by hand`:. root (3)(4096)=?`
`x_(i+1)=(2*x_i+s/(x_i)^2)/3`
`x_0=15`
`1^(st)` iteration :`x_1=(2*15+4096/15)/3`
`=(30+18.2044)/3`
`=(48.2044)/3`
`=16.0681`
`2^(nd)` iteration :`x_2=(2*16.0681+4096/16.0681)/3`
`=(32.1363+15.8646)/3`
`=(48.0009)/3`
`=16.0003`
`3^(rd)` iteration :`x_3=(2*16.0003+4096/16.0003)/3`
`=(32.0006+15.9994)/3`
`=(48)/3`
`=16`
`4^(th)` iteration :`x_4=(2*16+4096/16)/3`
`=(32+16)/3`
`=(48)/3`
`=16`
`:. root (3)(4096)=16`
Babylonian Method Table| Iteration | `x` | `4096/x` | Average |
| 1 | 15 | 18.2044 | 16.0681 |
| 2 | 16.0681 | 15.8646 | 16.0003 |
| 3 | 16.0003 | 15.9994 | 16 |
| 4 | 16 | 16 | 16 |
2. Find Cube root of 216 using Babylonian method, with Initial guess x0 = 5Solution:Babylonian method for finding cube roots by hand`:. root (3)(216)=?`
`x_(i+1)=(2*x_i+s/(x_i)^2)/3`
`x_0=5`
`1^(st)` iteration :`x_1=(2*5+216/5)/3`
`=(10+8.64)/3`
`=(18.64)/3`
`=6.2133`
`2^(nd)` iteration :`x_2=(2*6.2133+216/6.2133)/3`
`=(12.4267+5.5951)/3`
`=(18.0217)/3`
`=6.0072`
`3^(rd)` iteration :`x_3=(2*6.0072+216/6.0072)/3`
`=(12.0145+5.9855)/3`
`=(18)/3`
`=6`
`4^(th)` iteration :`x_4=(2*6+216/6)/3`
`=(12+6)/3`
`=(18)/3`
`=6`
`:. root (3)(216)=6`
Babylonian Method Table| Iteration | `x` | `216/x` | Average |
| 1 | 5 | 8.64 | 6.2133 |
| 2 | 6.2133 | 5.5951 | 6.0072 |
| 3 | 6.0072 | 5.9855 | 6 |
| 4 | 6 | 6 | 6 |
3. Find Cube root of 2 using Babylonian method, with Initial guess x0 = 1Solution:Babylonian method for finding cube roots by hand`:. root (3)(2)=?`
`x_(i+1)=(2*x_i+s/(x_i)^2)/3`
`x_0=1`
`1^(st)` iteration :`x_1=(2*1+2/1)/3`
`=(2+2)/3`
`=(4)/3`
`=1.3333`
`2^(nd)` iteration :`x_2=(2*1.3333+2/1.3333)/3`
`=(2.6667+1.125)/3`
`=(3.7917)/3`
`=1.2639`
`3^(rd)` iteration :`x_3=(2*1.2639+2/1.2639)/3`
`=(2.5278+1.252)/3`
`=(3.7798)/3`
`=1.2599`
`4^(th)` iteration :`x_4=(2*1.2599+2/1.2599)/3`
`=(2.5199+1.2599)/3`
`=(3.7798)/3`
`=1.2599`
`:. root (3)(2)=1.2599`
Babylonian Method Table| Iteration | `x` | `2/x` | Average |
| 1 | 1 | 2 | 1.3333 |
| 2 | 1.3333 | 1.125 | 1.2639 |
| 3 | 1.2639 | 1.252 | 1.2599 |
| 4 | 1.2599 | 1.2599 | 1.2599 |
4. Find Cube root of 5 using Babylonian method, with Initial guess x0 = 2Solution:Babylonian method for finding cube roots by hand`:. root (3)(5)=?`
`x_(i+1)=(2*x_i+s/(x_i)^2)/3`
`x_0=2`
`1^(st)` iteration :`x_1=(2*2+5/2)/3`
`=(4+1.25)/3`
`=(5.25)/3`
`=1.75`
`2^(nd)` iteration :`x_2=(2*1.75+5/1.75)/3`
`=(3.5+1.6327)/3`
`=(5.1327)/3`
`=1.7109`
`3^(rd)` iteration :`x_3=(2*1.7109+5/1.7109)/3`
`=(3.4218+1.7082)/3`
`=(5.1299)/3`
`=1.71`
`4^(th)` iteration :`x_4=(2*1.71+5/1.71)/3`
`=(3.42+1.71)/3`
`=(5.1299)/3`
`=1.71`
`:. root (3)(5)=1.71`
Babylonian Method Table| Iteration | `x` | `5/x` | Average |
| 1 | 2 | 1.25 | 1.75 |
| 2 | 1.75 | 1.6327 | 1.7109 |
| 3 | 1.7109 | 1.7082 | 1.71 |
| 4 | 1.71 | 1.71 | 1.71 |
This material is intended as a summary. Use your textbook for detail explanation.
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