Given the parent functions f(x) = log10 x and g(x) = 5x − 2, what is f(x) • g(x)?
@ash2326

- anonymous

Given the parent functions f(x) = log10 x and g(x) = 5x − 2, what is f(x) • g(x)?
@ash2326

- schrodinger

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- myininaya

That symbol between f and g means to multiply.

- anonymous

yes it does

- myininaya

Ok, do you need anymore help then?

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## More answers

- anonymous

lol yes I don't get the problem

- anonymous

How do I do it?

- myininaya

Take the expression that f is equal to and multiply it to the expression g is equal to.

- anonymous

i.e. stick a times sign between them, or just write them next to each other

- anonymous

How do I find out what each expression stands for?

- myininaya

It is given to you f(x)=log_10(x) and g(x)=5x-2

- anonymous

Yeah so how do I solve the expression?

- 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

Like if I said f(x)=5x and g(x)=sin(x) then f(x)*g(x)=5x*sin(x)=5xsin(x)

- anonymous

you lost me

- 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

Ok now I'm understanding you more, but i'm getting confused after the = sign.

- 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

All I'm doing is saying what f(x)*g(x) is given what f(x) equals and g(x) equals

- myininaya

I'm just replacing f(x) with what it equals and replace g(x) with what it equals

- anonymous

see I donnt know how to get the equal part

- myininaya

You put an equal sign

- myininaya

Or do you mean the part that follows the equal sign

- anonymous

yes that

- myininaya

the part that follows the equal sign is f(x)*g(x)

- anonymous

after the equal part

- myininaya

just the expressions they are equal to instead of saying f(x)*g(x)

- myininaya

Like if I said f(x)=3 and g(x)=2
what is f(x)*g(x)?

- anonymous

6

- myininaya

yes or you could say 3*2 without simplifying right

- myininaya

so what is complicated about what your problem is asking then?

- anonymous

ok.. I'll be right back.

- myininaya

|dw:1387336186336:dw|

- myininaya

then you are done

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