# Review Problem Set 2 Malabika Pramanik 2010W T2 Math 105 Section 203

```Review Problem Set 2
Malabika Pramanik
Math 105 Section 203
2010W T2
Math 105 (Section 203)
Review Problem Set 2
2010W T2
1/6
Review: An application of integration
Does the curve
Z
y=
sin x
2
e t dt
0
have a horizontal tangent in the interval [0, π]?
A. Yes, at the point x = 0
B. No
C. Yes, at the point x = π/4
D. Yes, at the point x = π/2
Math 105 (Section 203)
Review Problem Set 2
2010W T2
2/6
Review: Riemann sums
Express the limit
n
1 X 3+ k
e n
lim
n→∞ 3n
k=1
as a definite integral.
A.
1
3
Z
Z
1
4
e x dx
3
B.
e 3+x dx
0
C.
Z
3
4
e x dx
3
D.
Z
1
e 3x dx
0
Math 105 (Section 203)
Review Problem Set 2
2010W T2
3/6
Review : Quadric surfaces
Which of the following surfaces is shaped like a bowl?
A. x 2 + y 2 = 1
B. z = x 2 + y 2
C. z 2 = x 2 + y 2
D. y = x 2
E. x + y + z = 1
Math 105 (Section 203)
Review Problem Set 2
2010W T2
4/6
Review: Level Curves
Consider the surface z = f (x, y ) given by the equations below. Only one
of these equations has the property that the level curves can be both
parabolas as well as straight lines (depending on the value of z you
choose). Find the equation which has this property.
A. z = x 2 + y 2
B. x 2 − zy 2 = 0
C. z = x 2 − y 2
D. xyz = 1
E. y 2 − zx = 0
Math 105 (Section 203)
Review Problem Set 2
2010W T2
5/6
Review: Multivariable Calculus
You are standing on a surface at a point where the direction of steepest
ascent is u = h4/5, −3/5i. Find all the vectors of length 10 that points in
the direction of no change.
A. h3, 4i
B. h6, 8i
C. h6, 8i and h−6, −8i
D. h−6, 8i and h6, −8i
Math 105 (Section 203)
Review Problem Set 2
2010W T2
6/6
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