Functions and Trigonometry Quiz

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Questions and Answers

What is the range of the function f(x) = 2x^3 – 15x^2 + 36x + 1?

  • [0, 29]
  • [0, 30]
  • [1, 30]
  • [1, 29] (correct)

Let f(x) = x^3 + 3x^2 + 4x + bsinx + c cos x, x ∈ R. What can be said about the value of b^2 + c^2?

  • ≥ 2
  • None of these
  • ≥ 1 (correct)
  • ≤ 1

What type of function is f(x) = x, x ≥ -1?

  • One-one and onto (correct)
  • Onto but not one-one
  • One-one but not onto
  • Neither one-one nor onto

Let f(x) = sin(π[x]/2), x ∈ R. What type of function is f(x)?

<p>Periodic (D)</p> Signup and view all the answers

What is the number of onto functions from E = {1, 2, 3, 4} to F = {1, 2}?

<p>8 (A)</p> Signup and view all the answers

Let f(x) = ax^2 + bx + c, x ∈ [0, 2]. If f is a bijective function, what is f(2)?

<p>1 (A)</p> Signup and view all the answers

Let f(x) = sin^(-1)x^2 + [{n{x}}] + tan^(-1) ( 3 + 2x^2 ), where [.] and {.} are G.I.F. and F.P.F. respectively. What is the number of integers in the range of f?

<p>5 (C)</p> Signup and view all the answers

If f : R → S defined by f(x) = sin x – 3 cos x + 1, is onto, then what is the interval of S?

<p>[–1, 1] (C)</p> Signup and view all the answers

Let f(x) = sin([x]Ï€) where [x] denotes the integral part of x. What is the nature of function f?

<p>f is not one-one and non-constant (D)</p> Signup and view all the answers

The function f : [–1, 1] → [–π/2, π/2] defined by f(x) = sin^(-1)x is:

<p>one-one onto (C)</p> Signup and view all the answers

Let f : R → R be a function such that f(x) = x^3 + x^2 + 3x + sin x. What is the nature of function f?

<p>f is one-one and into (D)</p> Signup and view all the answers

Let f : N → N defined by f(x) = x^2 + x + 1, x ∈ N. What is the nature of function f?

<p>one-one but not onto (C)</p> Signup and view all the answers

What is the domain of the function f(x) = 2x - x²?

<p>(-∞, 0) ∪ [2, ∞) (A)</p> Signup and view all the answers

What is the domain of the function y = 2x + 1 / (x - 3x² + 2x³)?

<p>(-∞, 1/2] (B)</p> Signup and view all the answers

What is the domain of the function f(x) = 1 / (x + x² - 2)?

<p>(-∞, -1) ∪ [0, 2) (D)</p> Signup and view all the answers

What is the domain of the function f(x) = 7 - x - 7 / (1 - 5x)?

<p>(-∞, 0) ∪ [2, 3] (D)</p> Signup and view all the answers

What is the domain of the function f(x) = 5 - x - 3 / log₀.₃(x - 1)?

<p>(0, 1) ∪ (1, 2) (C)</p> Signup and view all the answers

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