Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

can someone please solve these for me :( 1. y = 2x^2 + 5 over x^2 2. y= 3x - 3 over x^2 - 1 3. y = x^2 + 5x+ 6 over x^2 + 6x + 9 4. y =x ^3 -8 over x^2 -8 5. y= 1 over 2x^2 + 3x - 7 please help me!

OpenStudy (amistre64):

what does it mean to "solve"?

OpenStudy (anonymous):

the question says " find any points of discontinuity for each rational function"

OpenStudy (anonymous):

@amistre64

OpenStudy (amistre64):

discontinuity in this case usually defines a value for which the function becomes undefined at. The values for when the denominators go to zero

OpenStudy (anonymous):

oh okay , so could u plz answer them for me

OpenStudy (amistre64):

answer them for you is a different website. We promote studying and learning of the material over handing out specifics. I would stay and see if i could guide you thru them, but i have class starting pretty soon

OpenStudy (amistre64):

3 and 5 seem to be about the trickest ones to solve for; the others are pretty straight forward

OpenStudy (anonymous):

oh okay , so could u jus help me with the first problem ? like how do i solve it ?

OpenStudy (amistre64):

y = 2x^2 + 5 over x^2 when does x^2 = 0 ?

OpenStudy (amistre64):

y= 3x - 3 over x^2 - 1 when does x^2 - 1 = 0 ?

OpenStudy (anonymous):

um .... i dont know

OpenStudy (anonymous):

\[\frac{3x-3}{x^2-1}\] When \[{x^2-1}=0\], the function breaks and there is a discontinuity (you can't divide by 0)> \[x^2-1=0\] \[x^2=1\] Do you know what to do from here?

OpenStudy (anonymous):

no i dont know any of this at all

OpenStudy (anonymous):

Are you familiar with the fact that you can't divide by 0?

OpenStudy (anonymous):

yea i know that fact

OpenStudy (anonymous):

A discontinuity is where the function breaks down (that is, the input doesn't make sense when you perform the function on it). For example, the function 1/x breaks when you insert x=0, as you can't divide by 0. Same thing here.

OpenStudy (anonymous):

oh okay so what would be the answer for the first question ?

OpenStudy (anonymous):

Which x do you put into the function that makes there be a 0 in the denominator?

OpenStudy (anonymous):

um ... 2x?

OpenStudy (anonymous):

What number?|dw:1351705215913:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
kaelynw: art igg
39 minutes ago 8 Replies 1 Medal
XShawtyX: Art
15 hours ago 6 Replies 0 Medals
Nina001: teach me how to draw or just tell me the basics
17 hours ago 2 Replies 1 Medal
XShawtyX: We doing another drawing gimme ideas to add to this
19 hours ago 9 Replies 1 Medal
RAVEN69: What is x 3+y 3+z 3=k
23 hours ago 20 Replies 1 Medal
cinna: Who is good with photo editing? Dm me pls
1 day ago 2 Replies 0 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!