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#1 2013-01-24 08:42:24
- skylor
- Guest
evaluate the expressions using the graph
Ok I'm having a really hard time understanding this
I'll try to reproduce the graph
x 5 6 7 8 9
f(x) 8 7 5 8 6
g(x) 9 8 7 6 7
find f(g(6))
g(f(7))
f(f(6))
g(g(9))
#2 2013-01-24 11:45:22
- bobbym
- Administrator
Offline
Re: evaluate the expressions using the graph
Hi skylor;
Please read this:
http://www.mathsisfun.com/sets/function … ition.html
f(g(6)) = 8
g(f(7)) = 9
f(f(6)) = 5
g(g(9)) = 7
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#3 2013-01-26 14:29:11
- John E. Franklin
- Star Member
Offline
Re: evaluate the expressions using the graph
w h(w) j(w)
2 4 1
3 9 1.5
4 16 2
9 81 4.5
16 256 8
j(w) means takeHalfOf(w)
h(w) means square(w)
So j(h(2) = 2 because h(2) = 4 because 2 to the 2 power is 4 and j(4) is half of 4 or 2 back for the answer.
So j(j(j(j(32)=2 because j(32) = 32/2 = 16 and j(16) = 16/2 = 8, and j(8) = 8/2 or 4. and j(4) is 2.
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