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Functions questions

Functions questions | form five Pure Advanced Mathematics

Find Functions examination questions, form five Pure Advanced Mathematics in acaproso.com

# Question
1

For the function, f(x) =[ (x+1)(x+3)]/[x2+8x+12]

  • sketch the curve of the function
  • Find its domain and range

Mathematical Calculation
2

The function fis defined by f(x) = (3x-2)/(x+1)

  • what is the range of f
  • find  f-1(x)
  • determine the domain and range of f-1(x)

Mathematical Calculation
3
  1. Given that f(x)=10x, g(x)=x+3  find fg(x) and (fg)-1 (x). Verify that if b=fg(a) then (fg)-1(b)=a.
  2. Find the set of values of p for which f(x)=x^2+3px+p is greater than zero for all real values of x.

Mathematical Calculation
4
  1. Given the functions f(t)=e^{t} and g(t)=ln t. Show that fcirc g(t)=gcirc f(t).
  2. If f(t)=at, g(t)=bt^{2}+3, (fcirc g)(2)=35 and  (fcirc g)(3)=75, find the values of a and b.

Mathematical Calculation
5

Given that ,f(x)=frac{x^{3}}{1-x^{2}}

  1. find horizontal and vertical asymptotes of f(x).
  2. Sketch the graph of f(x).
  3. State the domain and range of the function f(x).

Mathematical Calculation
6

Draw the graph of f(x)=x^{3}-3x^{2}-6x+8 in the interval [-5,6]. Hence tell how f(x) behaves for positively and negatively large values of x.


Mathematical Calculation
7

Find fcirc g(x) given that f(x)=2x^{2}+1 and g(x)=frac{4x}{x^{2}-2}, hence

  1. Determine the vertical and horizontal asymptotes of f circ g(x).
  2. Draw the graph of f circ g(x).
  3. State the domain and range of f circ g(x).

Mathematical Calculation
8

Given that f(x)=2^{x} and g(x)=log_{2}x,

  1. find the domain and range of f(x) and g(x).
  2. draw the graphs of f(x) and g(x) on the same axes. Comment on the resulting graphs.

Mathematical Calculation
9

Given that f(x)=frac{2x-x^{2}}{x^{2}-2x-3},

  1. write the values of x for which f(x)=0 and the values of x for which f(x)>0.
  2. show that f(x)
ightarrow -1 as x
ightarrow pm infty.
  3. sketch the grap of f(x), showing particularly where the curve crosses the x-axis and how it approaches its asymptotes.

Mathematical Calculation
10
  1. If f(x)=sqrt{x^{2}-9} and g(x)=x-2, find f(g(x)).
  2. Draw the graph of f(g(x)) obtained in part (a) above.

Mathematical Calculation