Why do you need absolute value signs when an integral of something is a natural log?

KnowledgeBrain

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For example: [integral of 1/(x+5)] = ln|x+5| I know you don't always put the absolute value signs there, so how do you know when you need them? And Isn't that going to mess with your answer?

 

Answer No.1

Anonymous

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The ln function is only defined when its argument is positive. (In your case the argument is x+5). And to ensure that an argument is positive, we sometimes need to put absolute value signs around it. Eg: x+5 can be negative (when x0. x can't be zero or negative value. If 0 You mentioned this superbly! tamsulosin and cialis interaction cialis generic cialis 20 mg daily dose cialis generic

Answer No.2

Anonymous

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