Answer:

Step-by-step explanation:
A function satisfying the equation
is said to be an even function. This denomination comes from the fact that the same relation is satisfied for functions of the form
with
even. Observe that if
is twice differentiable we can derivate using the chaing rule as follows:
implies 
Applying the chain rule again we have:
implies 
So we have that function
is also an even function.
57,682
I got this by putting the numbers in their place
I would try Khan Academy. He does very good explainations
Answer:
c
Step-by-step explanation: all you have to do is work it out