Which functions are even? Check all of the boxes that apply. f(x) = x - x?
f(x) = x2 – 3x + 2
1(x) = (x - 2)
f(x) = 1x1
DONE

Please check the explanation.

Step-by-step explanation:

We know that:

A function is even if f(-x)=f(x) for all x ∈ R

A function is odd if f(-x)=-f(x) for all x ∈ R

1)

f(x)=x-x

f(-x)=-x-(-x)=-x+x=0

Parity of 0:  Even and odd

2)

f(x) = x² – 3x + 2

f(-x)=(-x)²-3(-x)+2

     = x²+3x+2

As

f(-x) ≠ f(x) and also f(-x) ≠ -f(x)

So, f(x) = x² – 3x + 2 is neither od nor even

3)

f(x)=(x-2)

f(-x)=(-x-2)

f(-x) ≠ f(x) and also f(-x) ≠ -f(x)

So, f(x)=(x-2) is neither odd nor even

4)

f(x) = 1x¹

f(-x)=1(-x)¹

      =-x

As

f(-x)=-f(x)

Thus, f(x) = 1x¹ is odd function.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this