Subjects/Calculus II/Signed area and geometric area/Formula3.4. Signed area and geometric areaFormulaIn 3.4. Signed area and geometric areaFormulaCopy LaTeXA=∫ab∣f(x)∣dx.VariablesxVariable independiente (variable de integración)aConstant real (a menudo a>0)bConstant realfFunción integrandodxDiferencial respecto de x