Which of the following describes the geometric meaning of the derivative f′(a)f'(a)f′(a)?
The y-intercept of the function at aaa
The slope of the secant line through f(a)f(a)f(a) and f(a+h)f(a+h)f(a+h)
The slope of the tangent line at x=ax=ax=a
The area under the curve from 000 to aaa