Newton-Rhapson Method Test

Select your answers to the following 5 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

 For the function f(x) = x3 - 7 is f(1) positve or negative?

A. positive

B. negative

 
Answer 1:

 

Q2:

 

 For the function f(x) = x3 - 7 is f(2) positve or negative?

A. positive

B. negative

 
Answer 2:

 

Q3:

 

 Differentiate f(x) = x3 - 7

A. x2

B. x2 - 7

C. 3x2 - 7

D. 3x2
Answer 3:

 

Q4:

 

 Using x = 1.5 as an initial value, find the solution to the equation x3 - 7 after 1 iteration using the Newton-Rhapson method.

A. 2.037

B. 4.074

C. 1.0185

D. 2.137
Answer 4:

 

Q5:

 

 Carrying on from question 4, what is x after the second iteration?

A. 2.02

B. 2.137

C. 1.92

D. 1.8
Answer 5: