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cherrilyn
 5 years ago
evaluate the integral
cherrilyn
 5 years ago
evaluate the integral

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cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0\[\int\limits_{?}^{?}100xdx/(x3)(x ^{2}+1)^{2}\] I know I change it to A/x1 + B(x1)^2+C(x1)^3 then multiply it by (x1)^3 then what

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0oops I mean A/x3 + Bx+C/x^2+1 + Dx+E/(x^2+1)^2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0alright, good , now start taking small values for x ^_^ to find A, B, C and D

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wait, first you have to multiply the denominator on all parts

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Take x=3. You will find A directly.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so, you'll get :\[100x = A(x+1)^2 + Bx + C(x3)(x^2+1) + Dx + E (x3)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0now you can take values for x to find all the alphabets ^_^

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0when you distribute in..for example.. Bx+C(x3)(x^2+1) ... do you distribute the two things in the parenthesis to the Bx AND the C? or just the C

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0and Distribute (x3) to the Dx AND the E?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0hmm, I think it's the whole thing

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0okay so A is indeed 3

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The better way is to open all brackets, and add like terms together.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0now take other values for x, such as 1 1 2 2 ~

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0blaah do I have to test all of those numbers? lol its kiind of hard to predict the right values just by looking at it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes it's a must, you need to get all the values, A, B,C,D,and E

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0I mean the numbers 1, 1, 2, and 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes , you must lol, what other way is there to solve it?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you must check with all values my dear :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you checked the values? anwar? or shall I check after you lol

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0Okay If I plug in A=3 and x=1..... I get 100=12+2B2C+4D4E. now what? Or am I doing this wrong

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no you're write, so now you have equation 1, you can use it later to either subtract or add from another equation ^_^

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0alright I gtg, I'll be back later, bye ^_^

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0okay thankss! Ttyl :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0anwar will continue, most welcome :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I got all of them. Hopefully right!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A=3, B=3, C=9, D=24, E=8

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You're welcome!! You may want to check them.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0OMG, Sorry there was a mistake.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It should be: A=3, B=3, C=9, D=30, E=10. Sorry for the confusion.

cherrilyn
 5 years ago
Best ResponseYou've already chosen the best response.0what values for x did you use?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well.. I opened all the parenthesis, and add like terms together, and then solved the equations.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0For example if you have x^2(A+B)+x(C+2B)=5x^2+x, that means: A+BC=5 and C+2B=1.. I used this idea.
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