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Integration maths problem help please?

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  • Integration maths problem help please?


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Answer #1 | 30/12 2013 03:06
As you have two different variables, you need two sets of limits.
Answer #2 | 30/12 2013 06:07
no. It is not possible. since y also is a variable,you must also have another integration with respect to y. Integrating mean finding the area of the a function with in the given limits.You are integrating 1/(x+y) with limits 'a' to 'b'(It means you are finding the area of graph from a to b for a graph with equation 1/(x+y) ), y also is a variable so it may be any value within the given limits. If you do integration directly it mean you are considering y as constant. hope you got it.
Answer #3 | 30/12 2013 07:00
b ∫ dx / (x + y) a [ log (x + y) ]________limits a to b for variable x log ( b + y ) - log (a + y) log [ (b + y) / (a + y) ]
Answer #4 | 30/12 2013 08:07
If you do a simple ( and very simple ) indefinite integral you get ln(x+y)+K ... K = constant of integration.

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