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MCQ Problem Solving - Functions

The CAT Online Free Test Prep MCQs Problem Solving - Functions

Problem Solving: Functions

Question:

Value h(x) is 6x³-3x+9 and g(x) = 3x then g(f(x)) = ?
Option A:      18x³-9x+27
Option B:      3x+6x³-3x+9
Option C:      6x³-3x+9⁄3x
Option D:      18x³- 3x+3
  A     B     C     D  
Show/Hide Answer and Explanation

Correct Answer: A

Explanation Video

Explanation

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
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How to Solve Functions

For Functions question first understand the statement and the question stem. Try to solve and click the corresponding answer option. The drop down will appear to show the correct answer and explanation.