Exercises 1—14, to establish a big-Orelationship, find witnessesCandksuch that
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- If a functionfis increasing on (a,b) and decreasing on (b,c) , then what can be said about the local extremum offon (a,c) ?arrow_forwardDetermine if the following statement is True/False: For every f(n), g(n) such that f(n) ∈ O(g(n)), is it always true that g(n) ∈ O(f(n))? Justify your answer.arrow_forward1. Determine whether each of these functions is O(x). a) f (x) = 10 b) f (x) = 3x+7 c) f (x) = x2+x+1 d) f (x) = 5log x e) f (x) = ⌊x⌋ f ) f (x) =⌈x/2⌉arrow_forward
- Let A = B = C = {x 1 x is a real number}. Let f: A → B and g: B → C be defined as follows: f(a) 2a +3 and g(b) 6² Compute the following: (a) (fog)(2) (b) (gof)(2) (c) (gof)(x) (d) (fog)(x) (e) (fof)(y) (f) (gog)(y) = =arrow_forwardUse graphs to determine if each function f in Exercises 45–48 is continuous at the given point x = c. [2 – x, if x rational x², if x irrational, 45. f(x) c = 2 x² – 3, if x rational 46. f(x) = { 3x +1, if x irrational, c = 0 [2 – x, if x rational 47. f(x) = { x², if x irrational, c = 1 x² – 3, if x rational 3x +1, if x irrational, 48. f(x) : c = 4arrow_forwardSelect the following functions that are bijective. f3: R → R, f(x) = 14 f₂: R → R, f₂(x) 2 f₁:R → R, f₁(x) = x + x + x + x + 4 f4: R → R, f4(x) = -{ = x x², if x 20 X, if x <0arrow_forward
- Prove that f(x) = x2 + 2x is not injective.arrow_forwardShow that 0. x+1arrow_forwardSuppose that f(x) = 3(8x - x²)/256 for 0arrow_forwardA function f:R →→R, where R is the set of real- ax² + 5x - 8 numbers, is defined by f(x) = Find a + 5x8x² the interval of values of a for which is onto. Is the function one to one for a = 3? Justify your answer.arrow_forward2.6 Let f(x) = x² + ax+b € Z[x] be a quadratic polynomial with integer coefficients, for example, f(x) = x² + x + 6. Formulate a conjecture about when the set {f(n): ne Z and f(n) is prime} is infinite. Give numerical evidence that supports your conjecture.arrow_forwardFind functions f and g from the set of positive integers to the set of real numbers such that f (n) is not O(g(n)) and g(n) is not O( f (n)).arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning