
[Write on board:
... We say that f is 1–1, or injective, if a1 a2 in A implies that f(a1) f(a2) in B; i.e., for all b in B, f –1(b) contains at most one element. We say that f is onto, or surjective, if for all b in B there exists a in A such that f(a) = b; i.e., for all b in B, f –1(b) contains at least one element ...
... We say that f is 1–1, or injective, if a1 a2 in A implies that f(a1) f(a2) in B; i.e., for all b in B, f –1(b) contains at most one element. We say that f is onto, or surjective, if for all b in B there exists a in A such that f(a) = b; i.e., for all b in B, f –1(b) contains at least one element ...
Chicago High School for the Arts Algebra 1 (Honors) Name ______
... rounding, the ordering of decimals, pattern identification, absolute value, primes and greatest common factor Evaluate algebraic expressions by substituting integers for ...
... rounding, the ordering of decimals, pattern identification, absolute value, primes and greatest common factor Evaluate algebraic expressions by substituting integers for ...
Lecture21.pdf
... In this lesson, we present a theorem without proof then use the theorem to find all the roots (real or non-real) of a polynomial equation. We start with the definition below. The complex number w a bi is an nth root of the complex n number z if a bi z . ...
... In this lesson, we present a theorem without proof then use the theorem to find all the roots (real or non-real) of a polynomial equation. We start with the definition below. The complex number w a bi is an nth root of the complex n number z if a bi z . ...
2. For each binary operation ∗ defined on a set below, determine
... (b) Give examples to show that (G, ∗) may not be the same as (G, ·). An example could be found by setting (G, ·) = GLn (R), the group of n×n invertible matrices over R with · as matrix multiplication. For n ≥ 2, this group is not abelian. Notice, however, that if · is defined as addition we have equa ...
... (b) Give examples to show that (G, ∗) may not be the same as (G, ·). An example could be found by setting (G, ·) = GLn (R), the group of n×n invertible matrices over R with · as matrix multiplication. For n ≥ 2, this group is not abelian. Notice, however, that if · is defined as addition we have equa ...