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प्रश्न
find: f(1), f(−1), f(0) and f(2).
उत्तर
f (1) = 4 × 1 + 1 = 5 [By using f (x) = 4x + 1, x > 0]
f ( -1) = 3 × (-1) -2 [By using f (x) = 3x -2, x < 0]
= -3-2=-5f (0) = 1 [By using f (x) = 1, x = 0]
f (2) = 4 × 2 + 1 [By using f (x) = 4x + 1, x > 0]
= 9
Hence,
f (1) = 5, f (- 1) = -5, f (0) = 1 and f (2) = 9.
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