If f'(x) is increasing, then f”(x) is?
If the derivative, f'(x), is increasing, it means that as x increases, the rate of change of the function f(x) is also increasing
If the derivative, f'(x), is increasing, it means that as x increases, the rate of change of the function f(x) is also increasing. In other words, the slope of the tangent line to the graph of f(x) is becoming steeper as x increases.
To determine the relationship between f”(x), the second derivative, and f'(x), we need to understand the concept of concavity.
When f”(x) > 0, the graph of f(x) is concave up, meaning it curves upward as you move from left to right. In this case, if f'(x) is increasing, it implies that the slope of the tangent line is becoming steeper at an increasing rate. The graph looks like a smiley face or a cup that is facing upwards.
When f”(x) < 0, the graph of f(x) is concave down, meaning it curves downward as you move from left to right. In this case, if f'(x) is increasing, it indicates that the slope of the tangent line is becoming less steep at an increasing rate. The graph looks like a frown or a cup that is facing downwards. Therefore, if f'(x) is increasing, f''(x) can be either positive or negative, depending on the concavity of the graph. The key factor is the sign of f''(x) to determine whether the graph is concave up or down.
More Answers:
The Intermediate Value Theorem | Application and Examples in Calculus and Real AnalysisUnderstanding the Relationship between Decreasing Derivative and Negative or Decreasing Second Derivative in Math
Understanding Concave Down Functions | Exploring the Relation Between f(x) and f”(x)