College of Admission Tests Multan

Functions

Solve the question of Functions and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 1

Value h(x) is 6x³-3x+9 and g(x) = 3x then g(f(x)) = ?
  • 18x³-9x+27
  • 3x+6x³-3x+9
  • 6x³-3x+9⁄3x
  • 18x³- 3x+3

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Correct Answer: A

h(x) is 6x3-3x+9 and g(x) = 3x then g(f(x)) = ?

g(6x3-3x+9) = 3 × (6x3-3x+9)

18x3 - 9x + 27