Решенный интеграл вида ∫arccos(x/α)dx

Solving an indefinite integral of the form ∫arccos(x/α)dx by integration by parts, where α takes the values 2,3,4,5...n
An example of solving integrals for α=4.7
∫arccos(x/α)dx, ∫arccos(x/4)dx, ∫arccos(x/7)dx

The solution is in PDF format