Recent content by sigma128

Homework Statement sin x+cos x + tan x + cosec x + sec x+tan x +cot x = 8 find sin2x=? i still have no idea to deal with this problem, hint please

i don't understand why you can take a0=0,a1=1 and vice versa

hmm,now the mistake disappear!.Last time i saw that after u take n=m+4 the first sum u wrote the power of x =x^m which was wrong! but now it is x^m+2 ,that's right.i guess u may edit it already or my sight was wrong at that time.Anyway,thank you for your work.

oh i see,thank you.but u make little mistake after u take n=m+4 ,right? please check it.now i try to think why a0=0,a1=1 and vice versa

thank you very much

how can i post some method or my idea solving the problem.what programm needed to do that PS to..EugP , i want the series solution because my teacher want :smile:

y''+(x^2)y = 0 I tried to solve this problem using Power Series.But i can't make the solution in the form of series that have only two constants(a0,a1)that is, there are a0,a1, a2, a3. So i just wonder how can i make it has two constants.

VinnyCee, why 2q changed to 2y?

thank you for your guides

from Applied Mathematics and Modeling for Chemical Engneers (Richard G. Rice) Two vertical cylindrial tanks, each 10 m high,are installed side-by-side in a tank farm, their bottoms at the same level.The tanks are connected at their bottoms by a horizontal pipe 2 meters long,with pipe inside...

yes, i want to know too