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visits member for 2 years, 9 months
seen Jan 22 '13 at 23:32

Feb
28
comment How to find Error Bounds of Trapezoidal Rule?
Thank you for posting the hint !! but I still can't see the next step and why |$cos(x)$| became 1... Would you mind if you explain more ?
Feb
27
comment Surface area formula
The last one made me confuse a lot actually. so Now I found a typo of text book then hehe your formula makes more sense for me !! thanks a lot !
Feb
27
comment Surface area formula
Hi!! anon I think I can take a scan of textbook and share to this page. but i'm out now so as soon as i got home i will add the link of the text book copy
Feb
23
comment How can I determine convergence or divergence?
I got it !! Thank you !!
Feb
12
comment How to find $\int_{\frac{\pi}{2}}^{\frac{\pi}{4}}\cot^5x\,\csc^3xdx$
Thank you for sharing idea !! so I can convert $cot^2x = csc^2x-1$ that seems more easier to find the answer :9
Feb
8
comment How to find$\int x^2 \arctan(x) \;dx $
Im sorry about confusion. I just begin to use this site so I thought I could vote up for every one because everyone's answer was super good! Forgive me
Feb
8
comment How can I find the area of the region bounded by the hyperbola
My graph was open to up and downwards that's why I couldn't find the region Thank you for posing the graph !
Feb
8
comment How to find$\int x^2 \arctan(x) \;dx $
I got it !! Thank you so much !!