Why Is f(x)=2x^(-4) -3x + 2 a polynomial and y=x^-2 +7x^3 +1 not?
I'm wondering if g(x)=9 is a polynomial would that mean that y=9 is NOT a polynomial?
- rotchmLv 73 weeks ago
f(x)=2x^(-4) -3x + 2 and y=x^-2 +7x^3 +1 are both NOT polynomials. This is because some of the variables have negative exponents. A poly(nomial) has non negative exponents and integers, like 4, 2x, 7x^2000 + x² - 20 etc.
g(x) = 9 or y = 9 or 9 are polys, poly of degree zero. But some prefer to define a poly as positive integer exponents. In that case, g(x) = y = 9 would not be a poly.
- billrussell42Lv 73 weeks ago
In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.
neither of your examples are polynomials, only + exponents allowed.
g=9 or y=9 are not polynomials