2 years ago

Help fast pls will do your question in exchange ( if you have it )

Mathematics

1 answer:

nika2105 [10]2 years ago

7 0

Could u click select so we can see the choices

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Determine if the expression 9x^-2 is a polynomial or not. If it is a polynomial, state

Andrej [43]

Answer:

9x⁻² is not a polynomial

Step-by-step explanation:

A polynomial function is a function that involves non-negative integer powers of x such as a quadratic, cubic etc.

A polynomial is a function written in the form of ;

f{x} =aₙxⁿ+aₙ₋₁xⁿ⁻¹+-------+a₂x²+a₁x+a₀

The degree of a polynomial is the highest power of x in the expression

9x⁻² ----in this case, the power is negative thus this is not a polynomial.

5 0

2 years ago

Read 2 more answers

Which equation represents a nonlinear function? A:y=x B:y=2x C:y=x^2 D:y=x+2

N76 [4]

Answer: option c.

Step-by-step explanation:

Option a, b and d are linear equations because they are in the form of y = mx + c which is a straight line.

7 0

2 years ago

Prove that 1/sin^2A -1/tan^2A= 1

Vika [28.1K]

Answer:

Step-by-step explanation:

$LHS =\dfrac{1}{Sin^{2} \ A }-\dfrac{1}{Tan^{2} \ A }\\\\\\ = \dfrac{1}{sin^{2} \ A}- \dfrac{1}{\dfrac{Sin^{2} \ A}{Cos^{2} \ A}}\\\\\\= \dfrac{1}{sin^{2} \ A } - \dfrac{Cos^{2} \ A}{Sin^{2} \ A}\\\\\\= \dfrac{1-Cos^{2} \ A}{Sin^{2} \ A}\\\\\\= \dfrac{Sin^{2} \ A}{Sin^{2} \ A}\\\\\\= 1 = \ RHS$