Math Is Fun Forum

thanx gAr

you're right about learning.just hope i can learn it.

hi all

tried to get the derivative of the function above and got this in an online limit calculator:
(100*x^200+396*x^199+980*x^198+1940*x^197+3360*x^196+5320*x^195+7896*x^194+11160*x^193+
15180*x^192+20020*x^191+25740*x^190+32396*x^189+40040*x^188+48720*x^187+58480*x^186+
69360*x^185+81396*x^184+94620*x^183+109060*x^182+124740*x^181+141680*x^180+159896*x^179+
179400*x^178+200200*x^177+222300*x^176+245700*x^175+270396*x^174+296380*x^173+323640*
x^172+352160*x^171+381920*x^170+412896*x^169+445060*x^168+478380*x^167+512820*x^166+
548340*x^165+584896*x^164+622440*x^163+660920*x^162+700280*x^161+740460*x^160+781396*
x^159+823020*x^158+865260*x^157+908040*x^156+951280*x^155+994896*x^154+1038800*x^153+
1082900*x^152+1127100*x^151+1171300*x^150+1215200*x^149+1258512*x^148+1300960*x^147+
1342280*x^146+1382220*x^145+1420540*x^144+1457012*x^143+1491420*x^142+1523560*x^141+
1553240*x^140+1580280*x^139+1604512*x^138+1625780*x^137+1643940*x^136+1658860*x^135+
1670420*x^134+1678512*x^133+1683040*x^132+1683920*x^131+1681080*x^130+1674460*x^129+
1664012*x^128+1649700*x^127+1631500*x^126+1609400*x^125+1583400*x^124+1553512*x^123+
1519760*x^122+1482180*x^121+1440820*x^120+1395740*x^119+1347012*x^118+1294720*x^117+
1238960*x^116+1179840*x^115+1117480*x^114+1052012*x^113+983580*x^112+912340*x^111+
838460*x^110+762120*x^109+683512*x^108+602840*x^107+520320*x^106+436180*x^105+350660*
x^104+264012*x^103+176500*x^102+88400*x^101-88400*x^99-176500*x^98-264012*x^97-350660*
x^96-436180*x^95-520320*x^94-602840*x^93-683512*x^92-762120*x^91-838460*x^90-912340*
x^89-983580*x^88-1052012*x^87-1117480*x^86-1179840*x^85-1238960*x^84-1294720*x^83-
1347012*x^82-1395740*x^81-1440820*x^80-1482180*x^79-1519760*x^78-1553512*x^77-1583400*
x^76-1609400*x^75-1631500*x^74-1649700*x^73-1664012*x^72-1674460*x^71-1681080*x^70-1683920*x^69-1683040*x^68-1678512*x^67-1670420*x^66-1658860*x^65-1643940*x^64-1625780*
x^63-1604512*x^62-1580280*x^61-1553240*x^60-1523560*x^59-1491420*x^58-1457012*x^57-1420540*x^56-1382220*x^55-1342280*x^54-1300960*x^53-1258512*x^52-1215200*x^51-1171300*
x^50-1127100*x^49-1082900*x^48-1038800*x^47-994896*x^46-951280*x^45-908040*x^44-865260*
x^43-823020*x^42-781396*x^41-740460*x^40-700280*x^39-660920*x^38-622440*x^37-584896*
x^36-548340*x^35-512820*x^34-478380*x^33-445060*x^32-412896*x^31-381920*x^30-352160*
x^29-323640*x^28-296380*x^27-270396*x^26-245700*x^25-222300*x^24-200200*x^23-179400*
x^22-159896*x^21-141680*x^20-124740*x^19-109060*x^18-94620*x^17-81396*x^16-69360*x^15-
58480*x^14-48720*x^13-40040*x^12-32396*x^11-25740*x^10-20020*x^9-15180*x^8-11160*x^7-7896*
x^6-5320*x^5-3360*x^4-1940*x^3-980*x^2-396*x-100)/x^101

what you first have to do is multiply the equations so that coefficients with x  become the same.

hi zee-f

i think your understanding things the wrong way.
first of all you cant say that 12+2y=14y.
second like i said in post#39 you have to get rid of either x or y so that you can calculate the other one.
look again at post #39 lines 5,6,7 in latex.you'll see that the y is gone from one of the equations leaving only the x.then we can calculate x like in a normal equation.

So how would you do this one?

hi ganesh

hi gAr

think i get it.
i have read something on integrals but thats only the basic stuff.For example i wouldn't know how to calculate ∫1/(a^2+x^2)dx

It has nowhere been specified in which set of numbers is the solution.

hi gAr

hi zee-f

What you did there isn't correct.
Elimination method is about eliminating one of the two variables.
So it would be like this:

where do you live?

hi bobbym

what time is it there where you live?