Question

which of the following, if any, are polynomial functions?

Answer 1

yes second one is polynomial .

Answer 2

not the first one because of the variable in the denominator

Answer 3

you got that?
no to the first
yes to the second

Answer 4

i dont think all polynomials are functions

Answer 5

yes i understand that.. and just for educational purposes.. what makes something a polynomial function

Answer 6

you have only positive integer exponents

Answer 7

\[p(x)=a_nx^n+a_{n+1}x^{n-1}+...+a_1x+a_0\]

Answer 8

yep satellite explained it

Answer 9

alright and how would you determine the leading coefficient of a polynomial

Answer 10

it is the coefficient of the term of highest degree (larges exponent)

Answer 11

if the polynomial is written in standard form (from highest power to lowest) then it is the first coefficient you see

Answer 12

\[f(x)=-4x^2+3x^2-5x+2\] leading coefficient is \(-4\) for example

Answer 13

okay how about the polynomial: P(x)=3(x-1)(x+3)(2x-5)^2

would it be 3??

Answer 14

no

Answer 15

if you multiply out (in your head) you will get \(3\times4=12\)

Answer 16

satellite the leading coefficient of -4 x^2 +3x^@-5x will be -1 ?

Answer 17

or if you multiply out for real you get \[12 x^4-36 x^3-81 x^2+330 x-225\]but you don't need to do that to see the 12

Answer 18

satellite reply my question i am asking u

Answer 19

i don't understand it, look at what you wrote

Answer 20

@chlobohoe do you see how i got the 12?

Answer 21

yes i saw! cause you multiplied everything out. ima bout to post another question wait up<3

Answer 22

will it be 1 ? http://prntscr.com/7dpfkw

Answer 23

i mean -1

Answer 24

lol i made a typo

Answer 25

lol.its ok but u confused me :P