\( J = \int \frac { 5 x } { e ^ { 3 - 2 x ^ { 2 } } } d x \)
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To solve the integral \( J = \int \frac{5x}{e^{3 - 2x^2}} \, dx \), we can utilize a substitution method. Let's set \( u = 3 - 2x^2 \). Then the derivative \( du = -4x \, dx \) or \( dx = -\frac{du}{4x} \). This transforms the integral into: \[ J = \int \frac{5x}{e^u} \left(-\frac{du}{4x}\right) = -\frac{5}{4} \int e^{-u} \, du \] This integral simplifies to: \[ J = -\frac{5}{4} \left( -e^{-u} \right) + C = \frac{5}{4} e^{-u} + C \] Now substituting back for \( u \): \[ J = \frac{5}{4} e^{-(3 - 2x^2)} + C = \frac{5}{4} e^{2x^2 - 3} + C \] So, the final answer is: \[ J = \frac{5}{4} e^{2x^2 - 3} + C \]