written 5.3 years ago by |
i. To find ged (2378, 1769)
let a=2378, b=1769
by using Euclidean Algorithm,
a=2378 = $\ (1\times1769)$ + 609 -----------------------1
b=1769 = $\ (2\times609)$ + 551 -------------------------2
609= $\ (1\times551)$ + 58 --------------------------------3
551= $\ (9\times58)$ + 29 --------------------------------4
58= $\ (2\times29)$ + 0 --------------------------------5
$\therefore$ ged (2378, 1769) = 29
Now we find the value of X & y,
let a = 2378 and b=1769 as a linear combination of a and b
i. 609 = $a-b \ \ \ \ \ \ from$ equation 1
ii 559 = $b-2(a-b)\ \ \\ \ \ from$ 2 and i
= 3b-2a
iii 58 = (a-b)-(3b-2a) $ \ \ \ \ \ \ \ $ [by 3, i, & ii ]
= 3a-4b
iv. 29= (3b-2a) - 9 (3a-4b) $\ \ \ \ \ \ \ \ \ $ [by 4, ii & iii]
= 39b- 29a
= -29a +39b
We obtain -29a +39b = (a,b)
Therefore,
x=-29, y=39 is a solution to the equation 2378x+1769y =ged (2378, 1769)
other solution are,
$\ x= -29 + \frac{1769}{29} \times t$
$\ y= 39 - \frac{2378}{29} \times t$
other solution are,
x= -29+61t & y = 39-82t
where 't' is any integer.