Optional videos (K-A)

Justifying the power rule (K-A)

Limit of (1-cos(x))/x as x approaches 0 (K-A)

Limit of sin(x)/x as x approaches 0 (K-A)

Product rule proof (K-A)

Proof of power rule for positive integer powers (K-A)

Proof of power rule for square root function (K-A)

Proof of the derivative of cos(x) (K-A)

Proof of the derivative of sin(x) (K-A)

Proof: Differentiability implies continuity-video (K-A)