Help with some integrals
Well I can't get the math latex to do what I want so here it is in laymans terms.
I am trying to help a friend with some what seems like basic calc stuff only it's been a while since I've done calc 1 and 2...
So I have several questions which I'll break down into three different new topics..
I am trying to evaluate the indefinite integral of 2X/X+3 dx
I put X+3 in the numerator like so (X+1)^ -1 but I'm not sure what to do from here... or if thats right.
The definite integral evaluated from 7 to 10 of the absolute value of (X^2 - 81)/(X+9) dx
I realize that factors but would you do that? It would leave you with ((X+9)(X-9))/(X+9) which ultimate just leaves one factor of X-9 in the numerator.
So it would be the definite integral evaluated from 7 to 10 of absolute val (X-9)...
Any help would be greatly appreciated!
For the first one you either need to do long division or algebraic manipulations to get
Originally Posted by battleman13
As I said you can also use polynomial long division.
You are correct on the 2nd one just be careful about where changes signs