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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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jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1HI... I can help you

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

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1Hmm... you should find f(x)g(x)=(2x+4)(6x7)=2x+6x+4+7=4x11

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1\[axbx=(ab)x\]

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1Just using this formula we did the sum here

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1@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?

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1the 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

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1dw: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?

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1nothing 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.

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1ok.. 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...

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1HI... Are you still there?? My internet connection went down

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1No that's not multiplication. For this thing you need to know composition of mappings;. Are you familiar with this term?

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1Ok.. Here we go

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

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1f(g(x))=f(2x6)=3(2x6)7=6x187=6x25

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1See 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?

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1answer is 6x25

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???

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.16(4)25=2425=49

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?

jango_IN_DTOWN
 one year ago
Best ResponseYou've already chosen the best response.1First 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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