Basic properties of indefinite integral
If a function f ( x ) has a primitive on a segment X , and k – a number, then

If functions f ( x ) and g ( x ) have primitives on a segment X , then

If a function f ( x ) has a primitive on a segment X , then for interior points of this segment:

If f ( x ) is a continuous function on a segment X and differentiable in interior points of this segment, then:
