WILL GIVE A BRAINLIEST!!
2 answers:
Answer:
<h2>B.</h2><h2>Step-by-step explanation:
We know that the vertex of the parabola is
That means this points is being intercept by the parabola. In other words, the function that represents this parabola has to have this relation, when ,
.
So, you can observe that the second choice has a function that follows this relation. Let's see
So, for
Therefore, function B is the answer because it includes the vertex at its relation.
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Answer:
f'(x) > 0 on and f'(x)<0 on
Step-by-step explanation:
1) To find and interval where any given function is increasing, the first derivative of its function must be greater than zero:
To find its decreasing interval :
2) Then let's find the critical point of this function:
2.2 Solving for x this equation, this will lead us to one critical point since x' is not defined for Real set, and x''≈0.37 for e≈2.72
3) Finally, check it out the critical point, i.e. f'(x) >0 and below f'(x)<0.
