Well I'm posting this Tuesday because i have been in laffy visiting my family all weekend and when i got home i been going to the hospital to see my aunt thats in ICU :( so i kind of forgot about my blog cause i been having alot of things on my mind.
Well anyways in week 14 we learned how to do some different things involving integrations. And we had two test the first one I think i did real good on but the second one i bombed i don't know why i just didn't know how to do most of it.
So about the second tes i understand definite integrations but i don't understand how to find stuff using deffinite integration such as area etc. Thats where i got confused on the test i don't know how to find that. So if anyone can help me. thanks
I do know how to do indefinite so a few examples are:
Its basically the opposite from a derivative.
You also need to remember to put plus c behind every awnser
1: S(x+7)dx=(x^@/2)+7x +C
2: S(2x-3x^2)dx=x^2-x^3+C
Well i got to get started on my packet soon because that is big and I'm not that good. Also if anyone can tell me what you all did in class at school Friday that would help alot and if its something new can yall post the notes i missed and one example thanks alot.
Goodbye calc
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on friday we went over review problems from the homework. But just to give you a review, for indefinite integrals when you have an exponent add one and put the reciprocal in the front. for e integration, your u will always be what e is raised to and for ln integration if you have a fraction and the top is the derivative of the bottom, it can be considered ln integration. Hope this helps you!
ReplyDeletefriday we did e integration ima give you an example:].....e integration:
ReplyDeletewhatever is raised to the e power will be your u and du will be the derivative of u. For example:
e^2x-1dx
u=2x-1 du=2
rewrite the function as:
1/2{ e^u du, therefore
1/2e^2x-1+C will be the final answer.
hope this helps at least a little