SandraMae6937 SandraMae6937 15-03-2024 Mathematics contestada (d/dx(e-x²/2σ²)) a) (-x/σ²e-x²/2σ²) b) (-x/2σ²e-x²/2σ²) c) (x/σ²e-x²/2σ²) d) (x/2σ²e-x²/2σ²)