Dada a função f (x) = 8x + 15, calcule:
a) f(0) – f(3)
b) f(5) – f (10)
c) f(7) + f(-3)
d) f(2) + f( 3)
a) f(0) – f(3)
b) f(5) – f (10)
c) f(7) + f(-3)
d) f(2) + f( 3)
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Dada a função f (x) = 8x + 15, calcule:
a) f(0) – f(3) = 15 - 39 ==> - 24
f(0) = 8(0)+15 = 0+15 =15
f(3) = 8(3)+15 = 24+15 =39
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b) f(5) – f (10) = 55 - 95 ==> - 40
f(5) = 8(5)+15 = 40+15 =55
f(10) = 8(10)+15 = 80+15 =95
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c) f(7) + f(-3) = 71 - 9 ==> 62
f(7) = 8(7)+15 = 56+15 = 71
f(-3) = 8(-3)+15 = - 24+15 = - 9
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d) f(2) + f( 3) = 31 + 39 ==> 70
f(2) = 8(2)+15 = 16+15 = 31
f(3) = 8(3)+15 = 24+15 =39
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