Find: f(g(−4))
Find: g(f(5))
Consider the following functions. f(x) = 5x2 + 6, g(x) = 7x?
2016-10-25 10:24 pm
回答 (3)
2016-10-25 10:27 pm
g(x) = 7x
g(-4) = 7(-4) = -28
f(g(-4)) = f(-28)
f(x) = 5x²
f(-28) = 5(-28)²
f(-28) = 3920
f(5) = 5(5)²
f(5) = 125
g(f(5)) = g(125)
g(125) = 7(125)
g(125) = 875
g(-4) = 7(-4) = -28
f(g(-4)) = f(-28)
f(x) = 5x²
f(-28) = 5(-28)²
f(-28) = 3920
f(5) = 5(5)²
f(5) = 125
g(f(5)) = g(125)
g(125) = 7(125)
g(125) = 875
2016-10-25 10:38 pm
g(x) = 7x
g(-4) = 7(-4) = -28
f(g(-4)) = f(-28)
f(x) = 5x² + 6
f(-28) = 5(-28)² + 6
f(-28) = 3926
f(5) = 5(5)² + 6
f(5) = 131
g(f(5)) = g(131)
g(131) = 7(131)
g(131) = 917
g(-4) = 7(-4) = -28
f(g(-4)) = f(-28)
f(x) = 5x² + 6
f(-28) = 5(-28)² + 6
f(-28) = 3926
f(5) = 5(5)² + 6
f(5) = 131
g(f(5)) = g(131)
g(131) = 7(131)
g(131) = 917
2016-10-25 10:37 pm
tsk ; "Drake ' forgot the [ + 6 ] in his f computation...the concepts are valid
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https://hk.answers.yahoo.com/question/index?qid=20161025142448AAgf0Vv