What Derivatives Tell Us
A point that is a candidate for a maximum or minimum of a function.
What is a critical point?
The radius of the unit circle.
What is 1?
This handy derivative rule lets us factor out constants and multiply after taking derivatives instead.
What is the constant multiple rule?
A famous algebra theorem for finding right triangle side lengths.
What is the Pythagorean Theorem?
A point that marks when a function's slope changes from increasing or decreasing.
What is an inflection point?
2sin(x)cos(x)
What is the sine double angle formula?
This rule can be used to evaluate the derivative on any variable raised to a non-zero power.
What is the power rule?
Relates the slope of the secant line on an interval to the slope of the tangent line.
What is the Mean Value Theorem?
A type of line that could occur when the derivative is undefined.
What is a vertical tangent line?
(cos(x))^2 - (sin(x))^2
What is the cosine double angle formula?
A rule used to differentiate rational functions.
What is the quotient rule?
One of its conditions is f(a) = f(b).
What is Rolle's Theorem?
The definitively highest or lowest value for a function on an interval.
What is an absolute maximum or minimum?
These two functions relate the opposite and adjacent sides of a triangle.
What are tangent and cotangent?
Derivatives for the products of two functions could require the use of this rule.
What is the product rule?
It's indicated by a positive value for the second derivative.
What is concave up?
lim_{x->0} (sin(x)/x)
What is the number 1?
A rule defined by function composition.
What is the chain rule?