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Newton Raphson Method

Total questions: 6

Worksheet time: 3mins

Name
Class
Date
1.

If we want to give answer correct to 3 significant figures in the Newton-Raphson method, what the the stopping criteria?

a)

when two successive iterations give the same answers correct to 4 significant figures.

b)

when two successive iterations give the same answers correct to 2 significant figures.

c)

when two successive iterations give the same answers correct to 3 significant figures.

d)

when two successive iterations give the same answers correct to 1 significant figures.

2.

The iteration formula for Newton-Raphson method is

a)

xn+1=xn+f(xn)f(xn)x_{n+1}=x_n+\frac{f\left(x_n\right)}{f'\left(x_n\right)}

b)

xn+1=xnf(xn)f(xn)x_{n+1}=x_n-\frac{f\left(x_n\right)}{f'\left(x_n\right)}

c)

xn+1=xnf(xn)f(xn)x_{n+1}=x_n-\frac{f'\left(x_n\right)}{f\left(x_n\right)}

d)

xn+1=xn+f(xn)f(xn)x_{n+1}=x_n+\frac{f'\left(x_n\right)}{f\left(x_n\right)}

3.

The following are ways to verify whether there is a root in the interval [a, b] for a continuous function f(x) except

a)

f(a) < 0 and f(b) > 0

b)

f(a) x f(b) < 0

c)

f(a) x f(b) > 0

d)

The sign for f(a) and f(b) changes

4.

What line is used to find the next iteration in Newton-Raphson method?

a)

Secant

b)

Normal

c)

Chord

d)

Tangent

5.

In Newton-Raphson method, if we want to give our answer correct to 3 decimal places then we need to use how many decimal places in the calculation of the iterations?

a)

3 decimal places

b)

2 decimal places

c)

4 decimal places

d)

any number of decimal places will do

6.

The equation f(x) is given as x2-4=0. Considering the initial approximation at x=6 then the value of next approximation correct upto 2 decimal places is given as __________

a)

3.33

b)

1.33

c)

2.33

d)

4.33