Mathematics and Advanced Engineering Mathematics Review 2019/FE Exam Review Math...Mathematics and...

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Mathematics and

Advanced Engineering Mathematics

Dr. Elisabeth Brown

c� 2019

1

Mathematics 2 of 37

Fundamentals of Engineering (FE)

Other Disciplines Computer-Based Test (CBT)

Exam Specifications

Mathematics 3 of 37

1. What is the value of x in the equation given by log3�2 x+4

�� log3

�x� 2

�= 1 ?

(a) 10 (b) �1 (c) �3 (d) 5

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Mathematics 4 of 37

2. Consider the sets X and Y given by X = { 5 , 7 , 9 } and Y = {↵ , � } and the

relation R from X to Y given by R = { ( 5 , � ) , ( 7 , � ) , ( 9 , ↵ ) , ( 9 , � ) } .What is the matrix of R ?

(a)h0 1 0 1 1 1

i(b)

2

640 10 11 1

3

75 (c)

"0 0 11 1 1

#(d)

2

640 11 00 1

3

75

DISCRETE MATH

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Mathematics 5 of 37

3. What is the x-intercept of the straight line that passes through the point ( 0 , 3 )

and is perpendicular to the line given by y = 1.5 x + 4 ?

(a)�0 , 3

�(b)

�2 , 0

�(c)

�� 2 , 0

�(d)

✓9

2, 0

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Mathematics 6 of 37

4. What is the smallest x-intercept of the parabola given by y = 2 x2 + x � 4 ?

(a)

� 1 +

p33

4, 0

!(b) (�1 , 0 ) (c)

� 1�

p33

4, 0

!(d)

�1 +

p33

4, 0

!

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Mathematics 7 of 37

5. What is the volume of the largest sphere with center�5 , 4 , 9

�that is contained in

the first octant?

(a)256

3⇡ (b) 4 (c) 64⇡ (d)

64

3⇡

MENSURATION OF AREAS AND VOLUMES

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Mathematics 8 of 37

6. The exact value of cos

✓7 ⇡

12

◆is most nearly

(a) 0.9995 (b)

p3 + 1

2p2

(c)1�

p3

2p2

(d) �p3

4

TRIGONOMETRY

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Mathematics 9 of 37

7. Consider the complex numbers z1 = 2 + 2 j and z2 = 2 \ ⇡

6. What is the value of

the product z1 z2 ?

(a) 2p3� 2 +

�2 + 2

p3�j (b) 4

p2 \ 5 ⇡

12(c) 2

p3 + 2 +

�2 + 2

p3�j (d) 4

p2 \ ⇡

10

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Mathematics 10 of 37

7 (continued)... Consider the complex numbers z1 = 2 + 2 j and z2 = 2 \ ⇡

6.

What is the value of the product z1 z2 ?

(a) 2p3� 2 +

�2 + 2

p3�j (b) 4

p2 \ 5 ⇡

12(c) 2

p3 + 2 +

�2 + 2

p3�j (d) 4

p2 \ ⇡

10

ALGEBRA OF COMPLEX NUMBERS

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Mathematics 11 of 37

8. What are the real numbers a and b such that the complex number z =1� 2 j

3 + jcan be written as z = a + b j ?

(a) a =1

3, b = �2 (b) a = �1

4, b = 0 (c) a =

1

10, b =

7

10(d) a =

1

10, b = � 7

10

ALGEBRA OF COMPLEX NUMBERS

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Mathematics 12 of 37

9. The value of the angle ✓ , shown below, is most nearly

(a) 29.7� (b) 55.9� (c) 50.3� (d) 81.6�

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Mathematics 13 of 37

9 (continued)... The value of the angle ✓ , shown below, is most nearly

(a) 29.7� (b) 55.9� (c) 50.3� (d) 81.6�

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Mathematics 14 of 37

10. What is the radius of the circle given by the equation x2+ y2� 6 x+10 y+14 = 0 ?

(a) 2p5 (b) 20 (c) 4

p3 (d) 4

CONIC SECTIONS

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Mathematics 15 of 37

11. The roots of the cubic equation given by x3 � 4 x2 + 6 = 0 are most nearly

(a) x = �0.5, 1.2, 2.6 (b) x = �3.514, 0, 3.514

(c) no solutions exist (d) x = �1.086, 1.572, 3.514

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Mathematics 16 of 37

12. What is the maximum value of the function f (x) = x3 � 4 x2 + 6 ?

(a) �8 (b) 0 (c) 6 (d) no maximum exists

DIFFERENTIAL CALCULUS

DERIVATIVES AND INDEFINITE INTEGRALS

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Mathematics 17 of 37

13. What is@f (x, y)

@yof f (x, y) = 4 ln(y)� sec(x) cos

�py�+ 15 x � ⇡ ?

(a)4

y+ sec(x) sin

�py�

(b)4

y+

1

2

1py

sec(x) sin�p

y�

(c)4

y� 1

2

1py

sec(x) sin�p

y�

(d)4

y+

1

2

1py

sec(x) sin�p

y�+ 15x ln(15)� 1

DERIVATIVES AND INDEFINITE INTEGRALS

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Mathematics 18 of 37

13 (continued)... f (x, y) = 4 ln(y)� sec(x) cos�p

y�+ 15 x � ⇡

DERIVATIVES AND INDEFINITE INTEGRALS

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Mathematics 19 of 37

14. The value of the limit limx!0

x2

sin(x)is

(a) does not exist (b) 0 (c) 1 (d) 2

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Mathematics 20 of 37

15. The indefinite integral of f (x) = x sin�2 x�is

(a) �1

2x cos

�2 x�+

1

4sin�2 x�

(b) �1

2x cos

�2 x�+

1

4sin�2 x�+ C

(c) �1

4x2 cos

�2 x�+ C (d) �1

2x cos

�2 x�+

1

2sin�2 x�+ C

DERIVATIVES AND INDEFINITE INTEGRALS

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Mathematics 21 of 37

15 (continued)... The indefinite integral of f (x) = x sin�2 x�is

(a) �1

2x cos

�2 x�+

1

4sin�2 x�

(b) �1

2x cos

�2 x�+

1

4sin�2 x�+ C

(c) �1

4x2 cos

�2 x�+ C (d) �1

2x cos

�2 x�+

1

2sin�2 x�+ C

DERIVATIVES AND INDEFINITE INTEGRALS

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Mathematics 22 of 37

16. What is the area of the region of the first quadrant of the xy-plane that is bounded

by the curve y = 2 x2 , the line y = 9 , and the y-axis?

(a)9p2

(b) 486 (c)27p2

(d)18p2

DERIVATIVES AND INDEFINITE INTEGRALS

E. Brown

Mathematics 23 of 37

16 (continued)... What is the area of the region of the first quadrant of the xy-plane

that is bounded by the curve y = 2 x2 , the line y = 9 , and the y-axis?

(a)9p2

(b) 486 (c)27p2

(d)18p2

DERIVATIVES AND INDEFINITE INTEGRALS

E. Brown

Mathematics 24 of 37

17. What is the first moment of area with respect to the y-axis for the area in the first

quadrant bounded by the curve y = x2 , the line y = 9 , and the y-axis?

(a)486

5(b)

81

2(c)

81

4(d) 27

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Mathematics 25 of 37

17 (continued)... What is the first moment of area with respect to the y-axis for the area in the first

quadrant bounded by the curve y = x2 , the line y = 9 , and the y-axis?

(a)486

5(b)

81

2(c)

81

4(d) 27

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Mathematics 26 of 37

18. If y(x) =1X

n=0

an xn for coe�cients an, n = 0, 1, 2, . . ., what series given below is equal to y 0(x) ?

(a)1X

n=0

ann + 1

xn+1 (b)1X

n=0

n an xn (c)

1X

n=1

n an xn�1 (d)

1X

n=0

n an xn�1

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Mathematics 27 of 37

19. What is the Maclaurin series expansion of e 3x ?

(a)1X

n=0

n en�1 (b)1X

n=0

3

n!xn (c)

1X

n=0

0 (d)1X

n=0

3n

n!xn

DERIVATIVES AND INDEFINITE INTEGRALS

E. Brown

Mathematics 28 of 37

20. The indefinite integral of5

(x + 2) (x + 1)2is

(a) 5 ln |x+ 2|� 5 ln |x+ 1|� 5

x+ 1+ C (b)

5

x+ 2� 5

x+ 1+

5

(x+ 1)2+ C

(c) 5 ln |x+ 2|� 5 ln |x+ 1|+ 5 ln�(x+ 1)2

�+ C (d) 5 ln |x+ 2|� 5

x+ 1+ C

INTEGRAL CALCULUS

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Mathematics 29 of 37

20 (continued)... The indefinite integral of5

(x + 2) (x + 1)2is

(a) 5 ln |x+ 2|� 5 ln |x+ 1|� 5

x+ 1+ C (b)

5

x+ 2� 5

x+ 1+

5

(x+ 1)2+ C

(c) 5 ln |x+ 2|� 5 ln |x+ 1|+ 5 ln�(x+ 1)2

�+ C (d) 5 ln |x+ 2|� 5

x+ 1+ C

DERIVATIVES AND INDEFINITE INTEGRALS

E. Brown

Mathematics 30 of 37

21. What is the Fourier transform of F (t) ?

(a) 2 ⇡ f (t) (b) 2 ⇡ f (�t) (c) 2 ⇡ f (�!) (d) 2 ⇡ f (!)

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Mathematics 31 of 37

21 (continued)... What is the Fourier transform of F (t) ?

(a) 2 ⇡ f (t) (b) 2 ⇡ f (�t) (c) 2 ⇡ f (�!) (d) 2 ⇡ f (!)

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Mathematics 32 of 37

22. What is the Fourier series of f (t) = 3 cos�4 t�on the interval

h0 ,

2

i?

(a) 3 cos�4 t�

(b)1X

n=1

n2 cos(4n t) + (n� 1) sin(4n t)

(c)1X

n=1

3 cos(4n t) (d)1X

n=1

3n cos(2n t) +

n

2sin(2n t)

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Mathematics 33 of 37

23. Consider the curve given by the function f (x) = �x2 + 2 x . The area under the

curve for 0 x 1.5 , approximated by using the forward rectangular rule with

�x = 12 , is most nearly

(a)9

8(b)

17

8(c)

13

8(d)

7

8

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Mathematics 34 of 37

24. Consider the exact area, Ac, under the curve f (x) = �x2 + 2x for 0 x 1.5 .

Ac falls most nearly between which of the following precision limits?

(a)7

8± 1

8(b)

7

8± 1

4(c)

13

8± 1

8(d)

13

8± 1

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Mathematics 35 of 37

25. For matrices A =

"�2

3

#and B =

"12 5

0 �1

#, what is ATB ?

(a)h�1 �13

i(b) does not exist (c)

h14 �3

i(d)

"14

�3

#

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Mathematics 36 of 37

26. What is the curl of the vector field ~F =⌦� x y3 z , x3 , �z3

↵?

(a) �x y3 j +�3 x2 + 3 x y2 z

�k (b) �x y3 i + 3 x y2 z j

(c)⌦0 , x y3 , 3 x2 + 3 x y2 z

↵(d)

⌦0 , �x y3 , 3 x2 + 3 x y2 z

DETERMINANTS

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Mathematics 37 of 37

Mathematics and Advanced Engineering Mathematics

Exam Specifications Topic [ Example Question(s) in this Review ]

A. Analytic geometry [ 5, 10 ]

trigonometry [ 6, 9 ]

B. Calculus [ 12, 13, 14, 15, 16, 17, 18, 19, 20 ]

C. Di↵erential equations - see Di↵erential Equations video!

D. Numerical methods - e.g., algebraic equations [ 3, 12 ]

roots of equations [ 3, 4, 11, 12 ]

approximations [ 23, 24 ]

precision limits [ 24 ]

E. Linear algebra (e.g., matrix operations) [ 25, 26 ]

Dr. Elisabeth Brown c� 2019