Choose u and dv: Let's use integration by parts to solve the integral ∫−4xln(6x)dx. Integration by parts is given by the formula ∫udv=uv−∫vdu, where u and dv are parts of the integrand we choose to differentiate and integrate, respectively.Choose u=ln(6x) and dv=−4xdx. Then we need to compute du and v.Differentiate u to get du:∫udv=uv−∫vdu0.Integrate dv to get v:∫udv=uv−∫vdu3.Now we have u, dv, du, and v.
Apply integration by parts: Apply the integration by parts formula:∫−4xln(6x)dx=uv−∫vdu.Substitute the values of u, dv, du, and v into the formula:∫−4xln(6x)dx=ln(6x)⋅(−2x2)−∫−2x2dx.Now we need to integrate −2x2.
Integrate dv to get v: Integrate −2x2 with respect to x:∫−2x2dx=−32x3+C, where C is the constant of integration.Now we can write the full expression for the integral:∫−4xln(6x)dx=−2x2ln(6x)−(−32x3+C).Simplify the expression:∫−4xln(6x)dx=−2x2ln(6x)+32x3+C.
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