第一章 单元测试

1、单选题:
Rewrite the polynomial in nested form. The answer is ( ).
选项:
A:
B:
C:
D:
答案: 【

2、单选题:
( ) multiplications and ( ) additions are required for the nested form of the polynomial
选项:
A:6, 3
B:6, 2
C:5, 2
D:5, 3
答案: 【6, 3

3、单选题:
The binary representation of the base 10 integers 64 is ( )
选项:
A:(1000001)2
B:(1000002)2
C:(1000003)2
D:(1000000)2
答案: 【(1000000)2

4、单选题:
Convert the binary number (1011.101)2 to base 10. The answer is ( )
选项:
A:103/8
B:83/8
C:113/8
D:93/8
答案: 【93/8

5、单选题:
Convert the base 10 number 0.25 to binary and express as a floating point number fl(x) by using the Rounding to Nearest Rule. The answer is ( )
选项:
A:
B:
C:
D:
答案: 【

6、单选题:
For positive integers k = ( ), the number can be represented exactly (with no rounding error) in double precision floating point arithmetic.
选项:
A:1-49
B:1-51
C:1-52
D:1-50
答案: 【1-50

7、单选题:
Do the sum by hand in IEEE double precision computer arithmetic using the Rounding to Nearest Rule. The answer is ( )
选项:
A:
B:
C:
D:
答案: 【

8、单选题:
When x = ( ), there is subtraction of nearly equal numbers for , and find an alternate form ( ) that avoids the problem.
选项:
A:0,
B:0,
C:2,
D:2,
答案: 【0,

9、单选题:
Find the Taylor polynomial of degree 2 ( ) about the point x = 0 for the function
选项:
A:
B:
C:
D:
答案: 【

10、判断题:
When , 1+ x > 1 in double precision floating point arithmetic, with Rounding to Nearest. ( )
选项:
A:错
B:对
答案: 【

11、判断题:
The associative law holds for IEEE computer addition. ( )
选项:
A:对
B:错
答案: 【

第二章 单元测试

1、单选题:
Use the Intermediate Value Theorem to find an interval of length one ( ) that contains a root of the equation.
选项:
A:[0, 1]
B:[2, 3]
C:[3, 4]
D:[1, 2]
答案: 【[2, 3]

2、单选题:
Apply two steps of the Bisection Method for the equation to find an approximate root ( ) within 1/8 of the true root.
选项:
A:0.775
B:0.975
C:1.075
D:0.875
答案: 【0.875

3、单选题:
Starting with [2,3], ( ) steps of the Bisection Method are required to calculate the solution within for the equation .
选项:
A:31
B:33
C:34
D:32
答案: 【33

4、单选题:
The fixed points of are ( ).
选项:
A:2, 3
B:1, 2
C:3, 4
D:4, 5
答案: 【1, 2

5、单选题:
Rank the Fix-Point Iterations a); b) ; c) that converge from fastest to slowest ( ).
选项:
A:a > c > b
B:c > b > a
C:a > b > c
D:b > a > c
答案: 【a > b > c

6、单选题:
Find the forward and backward error ( ) for the function , where the root is 3/4 and the approximate root is .
选项:
A:0.01, 0.04
B:0.02, 0.03
C:0.02, 0.04
D:0.01, 0.02
答案: 【0.01, 0.04

7、单选题:
Find the multiplicity ( ) of the root r = 0 of .
选项:
A:4
B:2
C:3
D:1
答案: 【2

8、单选题:
Find the relation ( ) between forward and backward error for finding the root of the linear function .
选项:
A:
B:
C:
D:
答案: 【

9、单选题:
Apply two steps of Newton’s Method with initial guess to the equation . The answer is ( )
选项:
A:17/12
B:18/13
C:19/14
D:4/3
答案: 【18/13

10、单选题:
Suppose Newton’s Method is applied to the function f (x) = 1/x. If the initial guess is , find ( ).
选项:
A:
B:
C:
D:
答案: 【

11、单选题:
Apply two steps of the Secant Method to the equation with initial guesses and . The answer is ( ).
选项:
A:1.742
B:1.942
C:1.842
D:1.642
答案: 【1.742

12、判断题:
Fixed-Point Iteration of is locally convergent to the given fixed point . ( )
选项:
A:错
B:对
答案: 【

13、判断题:
Newton’s Method applied to converges in one step. ( )
选项:
A:错
B:对
答案: 【