differential calculus

Solving the integral ∫(ln(cos x))/(cos² x) dx
http://www.avidsynergy.com/pdf/IntegrationOf_Ln_Cos_x_div_Cos_x_squared.pdf

Note on product of functions derivative (f(x)g(x))'
http://www.avidsynergy.com/pdf/product_derivative.pdf

Derivative of definite integral
http://www.avidsynergy.com/pdf/derivative_of_integral.pdf

Note on geometric series
http://www.avidsynergy.com/pdf/geometric_series.pdf

Notes on Taylor and Maclaurin series derivation
http://www.avidsynergy.com/pdf/taylor_series.pdf

Arctan(x) derivative
http://www.avidsynergy.com/pdf/arctan_derivative.pdf

Differentiation of Logarithmic Function
www.avidsynergy.com/pdf/differentiationOfLog.pdf

Note on derivative of x power n
www.avidsynergy.com/pdf/derivative_of_x_power_n.pdf

Note on calculating Ax(t) = x′(t) and Ax(t) = λx(t) with eigenfunctions x(t) and eigenvalues λ

http://www.avidsynergy.com/pdf/eigenvalues_diff_eqs.pdf