#### Heresy

##### Active Member

- Joined
- Nov 13, 2017

- Messages
- 146

- Gender
- Male

- HSC
- 2019

Find the greatest coefficient of (2x - 1)^5.

I GET THE CONCEPT BEHIND GREATEST COEFFICIENT/ GREATEST TERM - However when you simplify this out (after factorials etc.) you will end up with -[6-k/2k].

1. As I go to solve for k, should I use T

_{k +1}>1 or should I use T

_{k+1}< 1?

Also,

2. I keep on getting k<-6 when I use T

_{k+1}> 1, but when I use T

_{k+1}< 1 I get k>-6 - since k always has to be greater than or equal to 0 - where do I round it to?

Ik k is supposed to be 2 - I'm stuck on HOW to get there - I spent 1hr on this and still not done (please don't laugh) - Please Help!