SOLUTION: evaluate f(-x) to determine whether the given function is even, odd, or neither. 49) f(x) = x^3 - 5x 50)f(x)=2x^2+x^4 Thank you

Algebra ->  Linear-equations -> SOLUTION: evaluate f(-x) to determine whether the given function is even, odd, or neither. 49) f(x) = x^3 - 5x 50)f(x)=2x^2+x^4 Thank you      Log On


   

Question 1059514: evaluate f(-x) to determine whether the given function is even, odd, or neither.
49) f(x) = x^3 - 5x
50)f(x)=2x^2+x^4
Thank you
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
49) f%28-x%29=%28-x%29%5E3-5%28-x%29=-x%5E3%2B5x=-%28x%5E3-5x%29=-f%28x%29
So the function is odd.
.
.
.
50) f%28-x%29=2%28-x%29%5E2%2B%28-x%29%5E4=2x%5E2%2Bx%5E4=f%28x%29
So the function is even.