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Why can the graph of y=∣f(x)∣y=|f(x)|y=∣f(x)∣ never lie below the xxx-axis?
A
They are the solutions of the equation.
B
For f(x)>g(x)f(x)>g(x)f(x)>g(x), the graph of y=f(x)y=f(x)y=f(x) lies above y=g(x)y=g(x)y=g(x). For f(x)<g(x)f(x)<g(x)f(x)<g(x), it lies below y=g(x)y=g(x)y=g(x).
C
(3,1)(3,1)(3,1)
D
The modulus makes every output non-negative.
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1.2.20 Solving modulus equations graphically (A-level only) Flashcards
21 flashcards on OCR A Level Maths 1.2.20 Solving modulus equations graphically (A-level only): the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.