Question

.: Correct answer is (c).
If f(x) is injec
x² + ax +5 x 20
2ax +5 x < 0
EXAMPLE 13
Let f. R+R is defined as f(x)
tive then a can be equal to
(a) (0) (b) (-0, 0] (c) (0,00
(d) (0,0)​

Answer 1

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