Question

Whats Domain and Range for: h(x) = x^3 + 2x + 5?

Answer 1

Is it just all real numbers for both? seems to easy...

Answer 2

@tylerxy3 Is the equation currently in your calculator ?

Answer 3

no?

Answer 4

@tylerxy3 The domain is all real numbers correct !

Answer 5

@tylerxy3 the range is infinite, because if you graph it you cannot find a min and max

Answer 6

Do you just solve by graphing?

Answer 7

so for range i put infinite?

Answer 8

@tylerxy3 yes! You can even use https://www.desmos.com/calculator online

Answer 9

So for f(x) = 1/x+3 I put
Domain: x != 3
Range: all real numbers?

Answer 10

or maybe that infinite to im not sure

Answer 11

I also had g(x) = sqr(x+6)
Domain:x>=-6
Range: all real numbers

Answer 12

@tylerxy3 The domain is all real number its (-infinity symbol,infinity symbol)

Answer 13

R = infinity symbl

Answer 14

what about the other two?

Answer 15

g(x) = sqr(x+6) ?

Answer 16

fyi != means not equal thats my inner coder coming out sorry -_-

Answer 17

squareroot of x+6

Answer 18

Okay hang on doing it right now.. I'm also gunna see if I can give you a paper I have from my school that will help you. you won't ever have to graph just know the pattern

Answer 19

oh sweet thank you

Answer 20

a lot of this stuff is just harder online miss a lot of concepts

Answer 21

Domain = [-6, infanti symbol)

Answer 22

You use the bracket to show that its closed. and you use "(,)' so show it does on forever

Answer 23

ok thanks

Answer 24

to write range as infinite do u do range:[infinit symb]

Answer 25

Yeah

Answer 26

okay did u see the f(x) = 1/x+3?

Answer 27

I could be wrong but I think its

Answer 28

(-infinity symbol 0] U [0,infinity symbol)

Answer 29

(-infinity , symbol 0] U [0,infinity symbol) **