Discover Questions

If the function f(x)=-x^4+2x^2-1 odd, even, or neither? Why? What is the purpose of DNA? One race car has greater acceleration than second race car.But the second race car can reach a higher speed than first.How is this possible? What is (-2/3)^3*(4/5)^2? Find the center and radius of the circle defined by the equation x^2+y^2-6x+2y-6=0.?