anonymous
  • anonymous
Given the parent functions f(x) = log10 x and g(x) = 5x − 2, what is f(x) • g(x)? @ash2326
Mathematics
schrodinger
  • schrodinger
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myininaya
  • myininaya
That symbol between f and g means to multiply.
anonymous
  • anonymous
yes it does
myininaya
  • myininaya
Ok, do you need anymore help then?

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anonymous
  • anonymous
lol yes I don't get the problem
anonymous
  • anonymous
How do I do it?
myininaya
  • myininaya
Take the expression that f is equal to and multiply it to the expression g is equal to.
anonymous
  • anonymous
i.e. stick a times sign between them, or just write them next to each other
anonymous
  • anonymous
How do I find out what each expression stands for?
myininaya
  • myininaya
It is given to you f(x)=log_10(x) and g(x)=5x-2
anonymous
  • anonymous
Yeah so how do I solve the expression?
myininaya
  • myininaya
There is really nothing to do here just replace f(x) with what it equals and replace g(x) with what it equals in the expression f(x)*g(x)
myininaya
  • myininaya
Like if I said f(x)=5x and g(x)=sin(x) then f(x)*g(x)=5x*sin(x)=5xsin(x)
anonymous
  • anonymous
you lost me
myininaya
  • myininaya
How about the example, if f(x)=2x and g(x)=e^x then f(x)*g(x)=2x*e^x=2xe^x
anonymous
  • anonymous
Ok now I'm understanding you more, but i'm getting confused after the = sign.
myininaya
  • myininaya
Or here is another example if f(x)=4x-2 and g(x)=9x then f(x)*g(x)=(4x-2)(9x) And if you want you could distribute and say f(x)*g(x)=(4x)(9x)-2(9x)=36x^2-18x
myininaya
  • myininaya
All I'm doing is saying what f(x)*g(x) is given what f(x) equals and g(x) equals
myininaya
  • myininaya
I'm just replacing f(x) with what it equals and replace g(x) with what it equals
anonymous
  • anonymous
see I donnt know how to get the equal part
myininaya
  • myininaya
You put an equal sign
myininaya
  • myininaya
Or do you mean the part that follows the equal sign
anonymous
  • anonymous
yes that
myininaya
  • myininaya
the part that follows the equal sign is f(x)*g(x)
anonymous
  • anonymous
after the equal part
myininaya
  • myininaya
just the expressions they are equal to instead of saying f(x)*g(x)
myininaya
  • myininaya
Like if I said f(x)=3 and g(x)=2 what is f(x)*g(x)?
anonymous
  • anonymous
6
myininaya
  • myininaya
yes or you could say 3*2 without simplifying right
myininaya
  • myininaya
so what is complicated about what your problem is asking then?
anonymous
  • anonymous
ok.. I'll be right back.
myininaya
  • myininaya
|dw:1387336186336:dw|
myininaya
  • myininaya
then you are done

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