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# Are these functions a polynomial function?

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a) $$h(x) = {1 \over x}$$

b) $$y = {3x^{2} - 2x^{5} + 4}$$

c) $$y = {-4x^{4} - 4x + 3}$$

d) $$y = {x^{1 \over 2} - 7}$$

I'm extremely lost... all I can guess is that they're all polynomial functions since they all have a degree?

Oct 29, 2018

#2
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I found this definition

"A polynomial function is a function such as a quadratic, a cubic, a quartic, and so on, involving only non-negative integer powers of x. We can give a general defintion of a polynomial, and define its degree."

This is the definition that I thought was right...

By this definition A and D are NOT polynomials

Oct 29, 2018

#1
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A polynomial function is a term used when there is more than one part to an equation. polynomial, in this case, they all are except A. Becasue D is a binomial and B/C are both trinomials

Oct 29, 2018
#2
+2

I found this definition

"A polynomial function is a function such as a quadratic, a cubic, a quartic, and so on, involving only non-negative integer powers of x. We can give a general defintion of a polynomial, and define its degree."

This is the definition that I thought was right...

By this definition A and D are NOT polynomials

Melody Oct 29, 2018