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1. Evaluate the indefinite integral: int2xe⁻³ˣd x .

User Iscle
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1 Answer

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Final answer:

To evaluate the indefinite integral of 2xe^-3x, integration by parts is applied, with u=2x and dv=e^-3x dx resulting in -2/3xe^-3x + 2/3 ∫ e^-3x dx plus a constant of integration C.

Step-by-step explanation:

The student is asking to evaluate the indefinite integral of 2xe-3x. To tackle this integration, we use the integration technique known as integration by parts, which follows from the product rule for differentiation. This technique is expressed as ∫ u dv = uv - ∫ v du, where u and v are functions of x.

For this specific problem: let u = 2x and dv = e-3x dx. After differentiating u and integrating dv, we substitute the resulting functions into the integration by parts formula:

  • du = 2 dx
  • v = -1/3 e-3x

Substituting these into the formula gives the integral as -2/3xe-3x + 2/3 ∫ e-3x dx. The remaining integral is straightforward and the final answer will include the arbitrary constant C, which represents the constant of integration.

User Douglas Hill
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