Online Course Discussion Forum

MC III Algebra Help

 
 
Picture of Haolin Cong
MC III Algebra Help
by Haolin Cong - Wednesday, July 13, 2022, 2:10 PM
 

Hi I’m doing the hw and I need help on 2.29, 2.33, and 2.34. I tried using the binomial theorem for 2.33 and 2.34, but I couldn’t find a combination which resulted in the series shown. For 2.29 I’m just stuck. Thanks for the help!

 
Picture of Dr. Kevin Wang
Re: MC III Algebra Help
by Dr. Kevin Wang - Thursday, July 14, 2022, 1:44 AM
 

Please refer to my hints for another students on this chapter.  For 2.29, after expanding everything and clearing the denominators, try to write the result as a geometric series (some terms are missing, but you can add them in and subtract them), and eventually you get a polynomial that is shorter and easier to handle.

Picture of Dr. Kevin Wang
Re: MC III Algebra Help
by Dr. Kevin Wang - Saturday, July 16, 2022, 2:26 PM
 

I added some more details for the answer to Aiden Gao and Kevin Song's questions.  Those should answer some of your questions as well.

Picture of Haolin Cong
Re: MC III Algebra Help
by Haolin Cong - Monday, July 18, 2022, 1:39 PM
 

Got it, thanks a lot!