View Full Version : Math help

legendboy

11-18-2003, 11:35 AM

I'm studing for a test tonight and I'm stuck on a question. Maybe you can help explain how I do this.

Given h(x)= x/(x-1) and k(x)= 1/(x^2)

simplify h o k and k o h.

legendboy

11-18-2003, 12:07 PM

ttt

littledan

11-18-2003, 12:16 PM

ok... here goes...

h o k = (1 / (x^2) ) / ( 1 / (x^2) ) = 1 / ( 1 - x^2)

k o h = 1 / ( x / (x-1) )^2 = (x^2 - 2x +1) / x^2 = 1 - (2/x) + (1/x^2)

hope that helps.. you're talking about h circle k right in calculus?

legendboy

11-18-2003, 12:41 PM

its just "h of k" and "k of h", just functions

403Gemini

11-18-2003, 12:42 PM

ahh shit this is why my last math class was summer school after grade 12 lol

legendboy

11-18-2003, 12:50 PM

thanks littledan, i still need to know how you simplified it tho...

gpomp

11-18-2003, 01:07 PM

I think this makes sense?

legendboy

11-18-2003, 01:43 PM

ahh mofo thats how you do it! seems so simple now that i can see it :banghead: thanks duncan :thumbsup:

403Gemini

11-18-2003, 01:46 PM

christ i cant even remeber 3 years back of how to do that!

even lookin at the steps! man thats crazy shit, i should take a math course to re-learn it

Davetronz

11-18-2003, 03:30 PM

Just curious, what kind of math course is this for.

legendboy

11-18-2003, 03:33 PM

just some upgrading for a cet course at sait

Gondi Stylez

11-18-2003, 04:19 PM

Originally posted by gpomp

I think this makes sense?

how did u do that all on comp?!?!?!! what program is that?! would come in handy for my math project and such!!:thumbsup:

gpomp

11-18-2003, 04:50 PM

MS Word equation editor 3.0

Seanith

11-18-2003, 06:17 PM

hehe i remember all that

Originally posted by gpomp

MS Word equation editor 3.0

Lair! You cheap cheat probably did it using Matlab or Maple!!!

Davetronz

11-18-2003, 11:29 PM

Originally posted by legendboy

just some upgrading for a cet course at sait

:confused: Ummm thats supposed to make sense to me then...

:banghead:....

Great!!!

I will show it to my Math 284 Instructor on Thurs... Hopefully he will say its something that I dont have to do ;)

Originally posted by FastDak318

:confused: Ummm thats supposed to make sense to me then...

:banghead:....

Great!!!

I will show it to my Math 284 Instructor on Thurs... Hopefully he will say its something that I dont have to do ;)

I think this is covered in math 30 (or 31).

Davetronz

11-19-2003, 12:43 AM

Originally posted by szw

I think this is covered in math 30 (or 31).

:rofl: I barely made it out of Math 30 alive... Someone please tell me why I am taking Calculus in an Engineering Course?!?!

Sad thing is that now that I am being taught well, I am not doing all that bad!

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