Derivative+Rules+and+Identities

Derivative Rules and Identities
Definition of the Derivative: Differentiability: A function f is differential at x=c, an interior value of it domain, if and only if f'(c)=k where k is a constant. A function is said to be differentiable if f'(c) exists for all c in the domain of f.
 * sin(x)' ||< cos(x) ||
 * cos(x)' ||< -sin(x) ||
 * tan(x)' ||< sec^2(x) ||
 * sec(x)' ||< sec(x)tan(x) ||
 * csc(x)' ||< -csc(x)cot(x) ||
 * cot(x)' ||< -csc^2(x) ||