Mathematics

Mathematics

Problem

Which statement correctly describes the indefinite integral ∫e−x2 dx\displaystyle \int e^{-x^{2}}\,dx? a) −e−x2+C-e^{-x^{2}}+C b) π2 erf⁡(x)+C\dfrac{\sqrt{\pi}}{2}\,\operatorname{erf}(x)+C, where erf⁡\operatorname{erf} is an elementary function c) It cannot be expressed in terms of elementary functions. d) −12x e−x2+C-\dfrac{1}{2x}\,e^{-x^{2}}+C

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