mathematics and advanced engineering mathematics review 2019/fe exam review math.pdfmathematics and...
TRANSCRIPT
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(
2x+ 4)− log3
(x− 2
)= 1 ?
(a) 10 (b) −1 (c) −3 (d) 5
E. Brown
Mathematics 4 of 37
2. Consider the sets X and Y given by X = { 5 , 7 , 9 } and Y = {α , β } and the
relation R from X to Y given by R = { ( 5 , β ) , ( 7 , β ) , ( 9 , α ) , ( 9 , β ) } .
What is the matrix of R ?
(a)[
0 1 0 1 1 1]
(b)
0 10 11 1
(c)
[0 0 11 1 1
](d)
0 11 00 1
DISCRETE MATH
E. Brown
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 = 1.5x + 4 ?
(a)(
0 , 3)
(b)(
2 , 0)
(c)(− 2 , 0
)(d)
(9
2, 0
)
E. Brown
Mathematics 6 of 37
4. What is the smallest x-intercept of the parabola given by y = 2x2 + x − 4 ?
(a)
(− 1 +
√33
4, 0
)(b) (−1 , 0 ) (c)
(− 1−
√33
4, 0
)(d)
(−1 +
√33
4, 0
)
E. Brown
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
3π (b) 4 (c) 64π (d)
64
3π
MENSURATION OF AREAS AND VOLUMES
E. Brown
Mathematics 8 of 37
6. The exact value of cos
(7 π
12
)is most nearly
(a) 0.9995 (b)
√3 + 1
2√
2(c)
1−√
3
2√
2(d) −
√3
4
TRIGONOMETRY
E. Brown
Mathematics 9 of 37
7. Consider the complex numbers z1 = 2 + 2 j and z2 = 2 ∠π
6. What is the value of
the product z1 z2 ?
(a) 2√
3− 2 +(
2 + 2√
3)j (b) 4
√2 ∠
5 π
12(c) 2
√3 + 2 +
(2 + 2
√3)j (d) 4
√2 ∠
π
10
E. Brown
Mathematics 10 of 37
7 (continued)... Consider the complex numbers z1 = 2 + 2 j and z2 = 2 ∠π
6.
What is the value of the product z1 z2 ?
(a) 2√
3− 2 +(
2 + 2√
3)j (b) 4
√2 ∠
5 π
12(c) 2
√3 + 2 +
(2 + 2
√3)j (d) 4
√2 ∠
π
10
ALGEBRA OF COMPLEX NUMBERS
E. Brown
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
E. Brown
Mathematics 12 of 37
9. The value of the angle θ , shown below, is most nearly
(a) 29.7◦ (b) 55.9◦ (c) 50.3◦ (d) 81.6◦
E. Brown
Mathematics 13 of 37
9 (continued)... The value of the angle θ , shown below, is most nearly
(a) 29.7◦ (b) 55.9◦ (c) 50.3◦ (d) 81.6◦
E. Brown
Mathematics 14 of 37
10. What is the radius of the circle given by the equation x2 + y2− 6x+ 10 y+ 14 = 0 ?
(a) 2√
5 (b) 20 (c) 4√
3 (d) 4
CONIC SECTIONS
E. Brown
Mathematics 15 of 37
11. The roots of the cubic equation given by x3 − 4x2 + 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
E. Brown
Mathematics 16 of 37
12. What is the maximum value of the function f (x) = x3 − 4x2 + 6 ?
(a) −8 (b) 0 (c) 6 (d) no maximum exists
DIFFERENTIAL CALCULUS
DERIVATIVES AND INDEFINITE INTEGRALS
E. Brown
Mathematics 17 of 37
13. What is∂f (x, y)
∂yof f (x, y) = 4 ln(y)− sec(x) cos
(√y)
+ 15 x − π ?
(a)4
y+ sec(x) sin
(√y)
(b)4
y+
1
2
1√y
sec(x) sin(√
y)
(c)4
y− 1
2
1√y
sec(x) sin(√
y)
(d)4
y+
1
2
1√y
sec(x) sin(√
y)
+ 15x ln(15)− 1
DERIVATIVES AND INDEFINITE INTEGRALS
E. Brown
Mathematics 18 of 37
13 (continued)... f (x, y) = 4 ln(y)− sec(x) cos(√
y)
+ 15 x − π
DERIVATIVES AND INDEFINITE INTEGRALS
E. Brown
Mathematics 19 of 37
14. The value of the limit limx→0
x2
sin(x)is
(a) does not exist (b) 0 (c) ∞ (d) 2
E. Brown
Mathematics 20 of 37
15. The indefinite integral of f (x) = x sin(2x)
is
(a) −1
2x cos
(2x)
+1
4sin(2x)
(b) −1
2x cos
(2x)
+1
4sin(2x)
+ C
(c) −1
4x2 cos
(2x)
+ C (d) −1
2x cos
(2x)
+1
2sin(2x)
+ C
DERIVATIVES AND INDEFINITE INTEGRALS
E. Brown
Mathematics 21 of 37
15 (continued)... The indefinite integral of f (x) = x sin(2x)
is
(a) −1
2x cos
(2x)
+1
4sin(2x)
(b) −1
2x cos
(2x)
+1
4sin(2x)
+ C
(c) −1
4x2 cos
(2x)
+ C (d) −1
2x cos
(2x)
+1
2sin(2x)
+ C
DERIVATIVES AND INDEFINITE INTEGRALS
E. Brown
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 = 2x2 , the line y = 9 , and the y-axis?
(a)9√2
(b) 486 (c)27√
2(d)
18√2
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 = 2x2 , the line y = 9 , and the y-axis?
(a)9√2
(b) 486 (c)27√
2(d)
18√2
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
E. Brown
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
E. Brown
Mathematics 26 of 37
18. If y(x) =
∞∑n=0
an xn for coefficients an, n = 0, 1, 2, . . ., what series given below is equal to y ′(x) ?
(a)
∞∑n=0
ann + 1
xn+1 (b)
∞∑n=0
n an xn (c)
∞∑n=1
n an xn−1 (d)
∞∑n=0
n an xn−1
E. Brown
Mathematics 27 of 37
19. What is the Maclaurin series expansion of e 3x ?
(a)
∞∑n=0
n en−1 (b)
∞∑n=0
3
n!xn (c)
∞∑n=0
0 (d)
∞∑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
E. Brown
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) 2π f (t) (b) 2 π f (−t) (c) 2 π f (−ω) (d) 2 π f (ω)
E. Brown
Mathematics 31 of 37
21 (continued)... What is the Fourier transform of F (t) ?
(a) 2π f (t) (b) 2 π f (−t) (c) 2 π f (−ω) (d) 2 π f (ω)
E. Brown
Mathematics 32 of 37
22. What is the Fourier series of f (t) = 3 cos(4 t)
on the interval[
0 ,π
2
]?
(a) 3 cos(4 t)
(b)
∞∑n=1
[n2 cos(4n t) + (n− 1) sin(4n t)
]
(c)
∞∑n=1
3 cos(4n t) (d)
∞∑n=1
[3n cos(2n t) +
n
2sin(2n t)
]
E. Brown
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
E. Brown
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
E. Brown
Mathematics 35 of 37
25. For matrices A =
[−2
3
]and B =
[12 5
0 −1
], what is ATB ?
(a)[−1 −13
](b) does not exist (c)
[14 −3
](d)
[14
−3
]
E. Brown
Mathematics 36 of 37
26. What is the curl of the vector field ~F =⟨− x y3 z , x3 , −z3
⟩?
(a) −x y3 j +(
3x2 + 3x y2 z)
k (b) −x y3 i + 3x y2 z j
(c)⟨
0 , x y3 , 3x2 + 3x y2 z⟩
(d)⟨
0 , −x y3 , 3x2 + 3x y2 z⟩
DETERMINANTS
E. Brown
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. Differential equations - see Differential 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