Question

Determine o valor da função afim f(x) = - 3x+4 para: a) x=1 b) x = 1/3 (um sobre três) c) x = 0 d) x = k + 1

Answer 1

a)

f(1) = -3.1 + 4

f(1) = -3 + 4

f(1) = 1

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b)

f(1/3) = -3.1/3 + 4

f(1/3) = -3/3 + 4

f(1/3) = -1 + 4

f(1/3) = 3

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c)

f(0) = -3.0 + 4

f(0) = 4

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d)

f(k+1) = -3.(k+1) + 4

f(k+1) = -3k - 3 + 4

f(k+1) = -3k + 1                              ok