Amaan M. answered • 09/15/16

Quant Researcher with Years of Experience Teaching and Tutoring

Hi Felipe,

You're doing the substitution and the integration perfectly, the only thing is that the extra term of d+L that you're ending up with is a constant, so it'll just get folded into the constant of integration (assuming this is an indefinite integral without limits). The final correct answer should be what you have with a constant of integration (+C) at the end.

Best,

Amaan