MATHEMATICS 111C MIDTERM REVIEW (Chapters 1, 2, 3, and 4)
WWW SUMMER 2011 TOTAL: I 48 Marks
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Find an equation in slopenintercept form (where possible) f

2.1
The Derivative
When was the first time you studied tangent lines?
In Geometry 11.
Lines tangent to what?
Circles.
How do you know a line is tangent to a circle?
When it intersects the circle at only one point.
Definition
A line is said to be tangent t

4.3
Derivatives of Exponential Functions
Consider f x e x .
As with every new function, we use the definition of derivative to find the derivative of f:
f x lim
h 0
f x h f x
e x h e x
exeh e x
ex eh 1
eh 1
.
lim
lim
lim
e x lim
h 0
h 0
h 0
h 0
h
h
h
h
h

Review III
Exponential Functions
2
5
x
A simple exponential function has a variable exponent like f x 3 x and g x .
In general, a simple exponential function is written as f x a x .
The domain of f is the set of all real numbers , .
The range of f is the

8.4 Derivatives of Trigonometric Functions
Consider f x sin x and g x cos x .
As with every new function, we use the definition of derivative to find the derivative of f:
f x h f x
sin x h sin x
sin x cos h cos x sin h sin x
lim
lim
h 0
h 0
h
h
h
sin x co

4.7
Curve Sketching II
Example 1
Consider f x x ln x .
a) Find all critical points of f.
b) Determine the interval(s) on which f is increasing and the interval(s) on which f is
decreasing.
c) Find all relative extrema of f.
d) Determine the interval(s) on

3.8
Differentials
Introduction
The purpose of studying functions is to understand change. In this section, we examine how the concept
of derivative helps us understand and approximate change.
Consider a differentiable function
. When the independent varia

8.6
LHospital Rule
Both f x ln x and g x x are increasing and concave downward on (0, ) and both f and g
approach infinity as x approaches infinity, which one of f and g approaches infinity faster?
lim
To answer the above question, we need to evaluate x

8.1
Radian Measure of Angles
Angle in Standard Position
Let P(x, y) be a point which moves around a circle O centred at the origin
O(0, 0) with radius r. P starts at the point A(r, 0) on the x-axis. For each
position of P, an angle = AOP is defined, which

Review I
The Laws of Exponents and Logarithms
4
Exponents are used to count the number of factors in a product. For example, 3 3 3 3 3 where the
4 times
5
exponent 4 indicates the number of 3s in this product. Similarly, a a a a a a where the exponent

1.5 Limits
Limit is the foundation of Calculus. In differential Calculus, we use limit to define the derivative
of a function. In integral calculus, we use limit to define the definite integral of a function. To
understand what limit is, let us look at th

1.7 The Intermediate Value Theorem
The Intermediate Value Theorem
Suppose that f is continuous on the closed interval [a, b] and let N be any number between f(a) and
f(b). Then there exists a number c in (a, b) such that f(c) = N.
The Intermediate Value T

3.4 Optimization
Introduction
Optimization is one of those applications in mathematics we studied since elementary
school. One only needs to know what sum and product mean (a third grader?) to be able
to solve the following problem:
The sum of two numbers

1.4
Functions
What is a function?
What does the word function mean?
Do you know what a food processor is?
Do you know what a food processor does?
Do you know what a multi-function food processor is?
Do you know what a multi-function food processor does?
H

3.7 Curve Sketching
Example 1
Sol
I
Sketch the graph of
6
f x 2
x 3
.
Gathering Info about f
The domain of f is
x |
,
.
The y-intercept is (0, 2).
There is no x-intercept because the graph of f does not intersect the x-axis.
f is an even function and t

3.5 Price Elasticity of Demand
In business, a demand equation relates the demand (the quantity demanded by consumers) for a product
and the (unit) price of the product.
Normally, when the (unit) price p of a product is decreased, the demand x for
the prod

3.1
Increasing and Decreasing Functions
Definition
A function f is increasing on (a, b) if for any x1 and x2 in (a, b),
x 2 x1 implies f x 2 f x1 .
If f is increasing on (a, b), its graph goes upward from left to right
over (a, b).
A function f is decreas

CBSY 2205
In-class assessment
Chapter 9 CRM
1.
Click on this URL: http:/www.timhortons.com List and explain the IT-supported
customer touch points and customer-touching applications (e-CRM) provided by the
company.
2.
In Terms of CIC & SFA, will Tim Horto

1.1 The Coordinate Plane
Introduction The coordinate plane is used to locate points, draw figures and graph equations. It helps us to
bring algebra and geometry together so that the study of one benefits the other.
Example 0 The Length of a Crease A recta