Question 2 Consider the following nonlinear equation: f (x) = x3 — x2 — 10 cos(x) = 0. (a) Let x0 = 100 and x1 = 50. Calculate x3 using the following Secant scheme: Xn Xn-1 Xn+1 = Xn f (x.) f(xn) — f...

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Answered Same DayDec 26, 2021

Answer To: Question 2 Consider the following nonlinear equation: f (x) = x3 — x2 — 10 cos(x) = 0. (a) Let x0 =...

David answered on Dec 26 2021
117 Votes
Question 3
Writing the equations in matrix form :
1 2 3 x1 14
2
5 2 x2 = 18
3 1 5 x3 20
A X = B
Now we need to find 2 matrix L,U such that A = LU
Where L,U are lower and upper diagonal matrix respectively , we find
1 0 0 1 2 3
L = 2 1 0 u = 0 1 -4
3 -5 1 0 0 -24
We can use the following algebra :
A= LU
AX = B
LU X =B
L Y = B , WHERE Y = UX
Here we will find y first and then we will use y to find x ;
1 0 0
LY = 2 1 0 =
3 -5 1
Y = L-1 B
1 0 0
L-1 = -2 1 0
-13 5 1
Y B
We found y = 14
-10
-72
Now y = ux
1 2 3 ...
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