Question

Let f(x) = 2x+5 and g(x) = x^2-3x+2. Perform each function operation and then find the domain.
3f(x)-2

Answer 1

is domain is R?

Answer 2

@kavitha I don't understand what you mean. Domain is usually all real numbers with exceptions

Answer 3

but here for no value of x this becomes infinity. so is R.

Answer 4

I guess so. R is real numbers?

Answer 5

yes

Answer 6

So all I have to do is, 3f(x)-2=3(2x+5)-2= 6x+15-2 = 6x+13?

Answer 7

@kavitha

Answer 8

Is it the one you asking?

Answer 9

yes

Answer 10

find the domain. 3f(x)-2???

Answer 11

That' s what it look incompleted because no g(x) involved!

Answer 12

Look at 48, thats how it is

Answer 13

I see, it's like random combination question

Answer 14

so my work is right?

Answer 15

I need to do it myself:
3f(x) = 3 *(2x+5) = 6x + 15
-> 3f(x)-2 = 6x + 13

Answer 16

Domain of straight line is R. (line is unlimited)

Answer 17

I'm going to sleep now, It's almost 4AM my time :(