Randolph College
Department of Mathematics and Computer Science

 

Homework # 18 - Math 149


The problems on this homework must be done alone.  The honor code is in effect.

 First name:   Last name:


 

Consider the function \(f(x) = x^3 + 2x - 2\)

A student performs Newton's method beginning with initial guess \(x_0 = 1\):

 
n xn xn+1
0 1.0000 0.8000
1 0.8000 0.7714
2 0.7714 0.7509
3 0.7509 0.7508

1.  Which of the following is true?

a.  There is a mistake computing x1

b.  The value x1 is correct, but there is a mistake computing x2

c.  The value x2 is correct, but there is a mistake computing x3

d.  The value x3 is correct, but there is a mistake computing x4

d.  There are no errors in this table.

 

2. Compute the antiderivative \(\int \cos x + 4x + 4 dx\)

a.  \(\sin x + 2x^2 + 4x + c\)

b.  \(\sin x + 2x^2 + c\)

c.  \(-\sin x + 4x^2 + 4x + c\)

d.  \(-\sin x + 4x^2 + c\)

d.  \(-\sin x + 2x^2 + 4x + c\)