Complex Numbers in Rectangular and Polar Forms
Recall: If z = a + bi C, then Re(z) = a and Im(z) = b.
The set of complex numbers has a one-to-one correspondence with the set
of points in a plane. A complex number can be represented as a point in a
plane c
SAMPLE 2ND EXAM
DIRECTIONS: For all given problems, write the complete solution in your bluebook. ANSWERS WITH NO
SOLUTION WILL NOT BE CREDITED. Encircle your final answer. Only blue or black pen should be
used for writing in your answer sheets. Pencils c
4/1/2015
Trigonometric Identities
College Algebra
Simplifying a trigonometric Expression
Cos x + tan x sinx
Trigonometric Identities
Trigonometric Identities
Simplifying by combining fractions
+
1 +
Proving Trigonometric Identities
Be careful about
SET OF REAL NUMBERS AND SOME SUBSETS
EQUALITY, FIELD AND ORDER AXIOMS
What are rational numbers?
RATIONAL NUMBERS (Q)
numbers that can be expressed as a quotient
a/b, where a and b are integers and b 0.
terminating or repeating decimals
Ex: , -2/3, 7/1