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leozap1
 one year ago
*Fan & Medal*
Please explain how I can do this, I want to learn it.
Let f(x) = 2x + 4 and g(x) = 6x  7. Find f(x)  g(x)
leozap1
 one year ago
*Fan & Medal* Please explain how I can do this, I want to learn it. Let f(x) = 2x + 4 and g(x) = 6x  7. Find f(x)  g(x)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0HI... I can help you

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0Okay... How do I solve this?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hmm... you should find f(x)g(x)=(2x+4)(6x7)=2x+6x+4+7=4x11

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Just using this formula we did the sum here

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@leozap1 did you get it?

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0On this part "2x+6x+4+7" aren't we suppose to subtract? It says to find f(x)  g(x)

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0So it would be 2x6x47?

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0Ohh so since they are already negative, it makes them positive?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the expression of f(x) will not be changed. but the expression of g(x) will be its negative.. g(x)=6x7 so g(x)=(6x7)=6x+7

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1444742322049:dw

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0Oh, that makes more since. So is the answer 4x+11, or is there anything else needing to be done?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0nothing more... If you want an explanation more in depth, in algebraic sense, then I can offer

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0I think I get it, I'll try working out other problems now. Thank you for all the help.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok.. remember f(x)g(x)=f(x)+{g(x)} where g(x) is when the expression of g(x) is multiplied by 1

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0This is one of the other problems, and I honestly have no idea about it ether. If you know how to do it I can create a new post so you will get another medal.

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0Is it suppose to be multiplication? If so I can figure it out, if not I have no idea...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0HI... Are you still there?? My internet connection went down

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No that's not multiplication. For this thing you need to know composition of mappings;. Are you familiar with this term?

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0Okay so it would be f(g(x)) = 3x72x6?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0f(g(x))=f(2x6)=3(2x6)7=6x187=6x25

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0See we are given the value of f(x).. now when you need to calculate f(g(x)) just replace x by g(x) in the expression of f(x)

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0So the answer would be 49?

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0f(g(x)) = 6x25 f(g(x)) , if x=4 or (ƒ ∘ g)(4) > 6(4) 25 = 45???

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0That's what I meant, sorry.

leozap1
 one year ago
Best ResponseYou've already chosen the best response.0Would we have to do that, or just leave it like it was?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0First you need to calcuate f(g(x)) in terms of x and the plug the numeric value of x, as it is given in this problem
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