Subjects/Calculus II/Appendix B: useful equivalences/FormulaB. Appendix B: useful equivalencesFormulaIn B. Appendix B: useful equivalencesFormulaCopy LaTeX∫tanxdx=−ln∣cosx∣+C=ln∣secx∣+C.VariablesCConstant real de integraciónxVariable independiente (variable de integración)dxDiferencial respecto de xlnLogaritmo naturalRelated formulasRelatedFormula∫x2+a2dx=arsenh(ax)+COpen formulaOpen in sectionRelatedFormulaarsenh(ax)=lnx+x2+a2−lna,a>0Open formulaOpen in section