Differences involving the direct function

Involving log(z)

Involving cos^-1(z)

Involving tan^-1(z)

Involving cot^-1(z)

Involving csc^-1(z)

Involving sec^-1(z)

Involving sinh^-1(z)

Involving cosh^-1(z)

Involving tanh^-1(z)

Involving coth^-1(z)

Involving csch^-1(z)

Involving sech^-1(z)