Consider a function . Which of the following best defines the slope of this function at a point ?
A
The value of the function
B
The value of the derivative
C
The value of at that point
D
The area under the curve from to
0 댓글
검증된 단계별 안내
1
Step 1: Understand the concept of the slope of a function at a point. The slope at a specific point on a curve is defined as the rate of change of the function at that point. This is mathematically represented by the derivative of the function at that point.
Step 2: Recall the definition of the derivative. The derivative of a function f(x) at a point x = a, denoted as f'(a), is the limit of the difference quotient as the interval approaches zero: .
Step 3: Compare the options provided in the problem. The value of the function f(a) represents the height of the curve at x = a, not the slope. The value of x at that point is simply the x-coordinate and does not describe the slope. The area under the curve from 0 to a is related to integration, not differentiation.
Step 4: Recognize that the correct answer is the value of the derivative f'(a), as it directly defines the slope of the function at x = a.
Step 5: Conclude that the slope of the function y = f(x) at a point x = a is best defined by the value of the derivative f'(a).