Challenge question ne one?....i dunno y it's "plus or minus" (1 Viewer)

[lillaila]

Find the greatest coefficient of:
(2x-1)*5
..................y is it +/- 80???

 

[BlackJack]

When you expand the thing, the coefficients are:
2^5, -2^4*5C1, 2^3*5C2, etc...

The x^4 and the x^3 are both the 'greatest' coefficient (watch how they define greatest), as they are 80 and -80.
(I believe the magnitude i.e. |x| is used as the gauge).

 

[lillaila]

aw, thnx...cos i thought 80 is obviously> -80

 

[Affinity]

I am quite certain that 70 would be considered greater than -80 with that wording.

if they want the absolute value, they should specify magnitude.

 

[BlackJack]

Yeah, I know... It's very misleading.