Math 3C - Winter 2009 - Practice Final Exam, Exams of Pre-Calculus

This is a practice final exam for math 3c course in winter 2009. It covers various topics in mathematics including trigonometry, polynomials, functions, and calculus. The exam consists of 10 questions, including solving equations, determining true or false statements, analyzing the path of a moving object, finding the domain, range, and inverse of functions, solving systems of equations, graphing functions, and solving problems related to interest compounded yearly.

Typology: Exams

Pre 2010

Uploaded on 03/28/2010

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Math 3C - Winter 2009 - Practice Final Exam
Name and ID:
Section:
Please turn off cellular phones, pagers, and computers. No calculators nor notes
are allowed. Make sure that your name is written legibly above. Please read
each question carefully and answer in a way which indicates your understanding
of the material. You have until the end of the period to finish.
1) Find all solutions to the following equations for θ.
(a) cos(θ) = 1
2
(b) cos(2θ) + cos(θ) = 0
(c) 2 cos(2θ) = 1
1
pf3
pf4
pf5
pf8
pf9
pfa

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Math 3C - Winter 2009 - Practice Final Exam

Name and ID: Section:

Please turn off cellular phones, pagers, and computers. No calculators nor notes are allowed. Make sure that your name is written legibly above. Please read each question carefully and answer in a way which indicates your understanding of the material. You have until the end of the period to finish.

  1. Find all solutions to the following equations for θ.

(a) cos(θ) = (^12)

(b) cos(2θ) + cos(θ) = 0

(c)

2 cos(2θ) = 1

  1. In each of the following determine whether each statement is true or false. Explain your answer.

(a) T F x^5 /^2 + 4x^3 /^2 + x + 1 is a polynomial.

(b) T F Every line y = mx + b intersects the x-axis exactly once.

(c) T F

√ 2 2 =^ √^1 2

(d) T F The period of sin(2x) + 1 is 1.

(e) T F The function tan(θ) is always the slope of the line which forms an angle of θ with the x axis.

  1. Find the domain, range, and inverse of the following functions.

(a) f (x) = x + 1 x − 1

(b) g(x) = 2e^1 −x.

  1. Find all solutions of the following equations.

(a) 2x^2 + x = 1.

(b) sin(2t) = sin t.

(c) x + y = 3 and 3x − y = 3.

  1. Find both possible side lengths x in the following triangle.

x

π 6

4 5

√ 5

  1. $400 of money is placed in a bank account which earns interest compounded yearly.

(a) What must the interest rate be if one year later there is $500 in the account?

(b) How long will it take for the amount of money to double? Your answer can be left in calculator-ready form.

  1. Let values of f , g, and h be given in the table below. Decide for each function if it is a linear, power, logarthmic, or exponential function.

x 1 2 3 f (x) 3 4 5 g(x) 3 6 12 h(x) 3 12 27

a) f :

b) g:

c) h: