Subjects/Calculus II/Useful forms/Formula8.6. Useful formsFormulaIn 8.6. Useful formsFormulaCopy LaTeX∫x2+a2dx=a1arctan(ax)+C,a>0VariablesCConstant real de integraciónxVariable independiente (variable de integración)aConstant real (a menudo a>0)dxDiferencial respecto de xConditionsa>0Related formulasRelatedFormula∫(x−r)ndx=−(n−1)(x−r)n−11+C,n>1Open formulaOpen in sectionRelatedFormula∫x−rdx=ln∣x−r∣+COpen formulaOpen in section