Question

sejam as funções f (×) = x elevado a 2 -2× e g(×) = 3×+4 calcule 2 f (2)- 3g (1)

Answer 1

f(2) = 2² - 2.2
f(2) = 4 - 4
f(2) = 0

g(1) = 3.1 + 4
g(1) = 3+4
g(1) = 7

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2 .f(2) - 3 .g(1)

 2 . 0 - 3 . 7
 
  0 - 21 = - 21                          ok