Given f(x) = x - 3 and g(x) = 2x+1, find (f+g)(-4) and (f+g)(x)?

2017-07-31 6:30 am

回答 (4)

2017-07-31 6:36 am
(f + g)(- 4) = f(- 4) + g(- 4) = - 7 + - 7 = - 14

time to READ your textbook !!
2017-07-31 3:34 pm
f(x) = x - 3
g(x) = 2x + 1
(f + g)(-4) = -14
(f + g)(x) = 3x - 2
2017-07-31 10:42 am
(f + g)(x) = x - 3 + 2x + 1 = 3x - 2
(f + g)(-4) = 3(-4) - 2 = -14
2017-07-31 6:31 am
rule
(f+g)(x)=f(x)+g(x)


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