Question

Determine o domínio D das seguintes funções: a) y = 1-6x b) fx= x-4+ 1x - 2 c) y= 2x-3 d) fx=2x + 3- x2x + 1 e) y= x - 52+32x - 15 f) fx= x + 13 - x g) f (x) = 32x+ 3
com cálculo
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Answer 1

Resposta:

A) f (x) = 2x + 3 f (-2) = 2. (- 2) + 3 = -4 + 3% 3 -1

B) f (x) = 2x + 1 f (-2) = 2 . (- 2) + 1 = -3

C) f (x) = 3x + 2x + 1% 3D 3. (- 2) + 2. (- 2) +1 -6-4 + 1 = -9

D) f (x) = - 4x f (-2) = 8

E) f (x) = -5x + 2x + 2 f (-2) = 10-4 + 2 = 8

F) f (x) = 4x + 4x f (-2) = -8 -8 = 0