SOLUTION: Given {{{f(x) = 4x-3}}} and {{{g(x) = 2x^3}}} find {{{f(g(-1))}}} and {{{g(f(-1))}}}

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Question 37986: Given f%28x%29+=+4x-3 and g%28x%29+=+2x%5E3 find f%28g%28-1%29%29 and
g%28f%28-1%29%29
Answer by lyra(94) About Me  (Show Source):
You can put this solution on YOUR website!
What f%28g%28-1%29%29 means is take g of -1 and then take the solution of g of -1 and use it as the input x for the function f:
g%28-1%29=2%28-1%5E3%29
g%28-1%29=2%28-1%29
g%28-1%29=-2
f%28-2%29=4%28-2%29-3
f%28-2%29=-8-3
f%28-2%29=-11
f%28-1%29=4%28-1%29-3
f%28-2%29=-4-3
f%28-2%29=-7
g%28-7%29=2%28-7%5E3%29
g%28-1%29=2%28-343%29
g%28-1%29=-686
Hope this helps, feel free to contact me with any further questions,
lyra