Hello , My thinking: Rearrange the equation and you will get this: Integrate it... I think that the absolutes can be ignored, in that case I get: But the correct f(x) is something very different. Thanks for your help.
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Originally Posted by Tau But the correct f(x) is something very different. Probably 'cause it was set for being constant.
The "answer" to this problem is: According to the book. Don't ask me what it means or in what context it is a "answer".
Originally Posted by Tau Hello , My thinking: Rearrange the equation and you will get this: Integrate it... Mr F says: The mistake is in this line. I've added the correction (in red). I think that the absolutes can be ignored, in that case I get: But the correct f(x) is something very different. Thanks for your help. After the correction it follows that where is also completely arbitrary. At this stage I'd substitute to get the value of B. Then I'd substitute the value for B and make y the subject. The book's answer is correct.
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