114k views
1 vote
Complete the table to perform four iterations of the Secant Method.

i x(i-1) x(i) x(i+1) ea(%)
1 0.0000 - - 53900.00
8.0000 0.0148
2 - 50.13
0.0297
3 2.1883 101.36
4 1.3209 65.67

User KKlalala
by
8.0k points

1 Answer

5 votes

Final answer:

The Secant Method is an iterative numerical method used to find the roots of a function. It estimates the location of the root by linear interpolation. Four iterations of the Secant Method are performed using the given initial values.

Step-by-step explanation:

The Secant Method is an iterative numerical method used to find the roots of a function. It is based on linear interpolation between two initial points to estimate the location of the root. The formula for each iteration is:

x(i+1) = x(i) - (f(x(i))*(x(i)-x(i-1))/(f(x(i))-f(x(i-1))))

To perform four iterations of the Secant Method, we start with two initial values x(0) and x(1) and use the formula to calculate x(2), x(3), and x(4).

Iteration 1:

x(0) = 0.0000

x(1) = 8.0000

f(x(0)) = 0.0148

f(x(1)) = 65.67

x(2) = x(1) - (f(x(1))*(x(1)-x(0))/(f(x(1))-f(x(0))))

x(2) = 8.0000 - (65.67*(8.0000-0.0000))/(65.67-0.0148)

x(2) = 0.0148

Iteration 2:

x(1) = 8.0000

x(2) = 0.0148

f(x(1)) = 65.67

f(x(2)) = 1.3209

x(3) = x(2) - (f(x(2))*(x(2)-x(1))/(f(x(2))-f(x(1))))

x(3) = 0.0148 - (1.3209*(0.0148-8.0000))/(1.3209-65.67)

x(3) = -50.13

Iteration 3:

x(2) = 0.0148

x(3) = -50.13

f(x(2)) = 1.3209

f(x(3)) = 101.364

x(4) = x(3) - (f(x(3))*(x(3)-x(2))/(f(x(3))-f(x(2))))

x(4) = -50.13 - (101.364*(-50.13-0.0148))/(101.364-1.3209)

x(4) = 2.1883

Iteration 4:

x(3) = -50.13

x(4) = 2.1883

f(x(3)) = 101.364

f(x(4)) = 1.3209

The table is now complete with four iterations of the Secant Method.

User Henry Vonfire
by
8.3k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.