MrCalculus's Posts
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[quote author=Dr. Asiko]Hi guys, I've been following the thread for a while now, nt comenting tho'...medic in da hauz(low jamb score sha [/quote]U'l welcom sist |
hillsnite: Find f'''(x) for y =2x^4 + cosxf"'(x) means d^3y/dx^3 so therefore using ax^n=nax^(n-1) dy/dx=8x^3-sinx d^2y/dx^2=24x^2-cosx d^3y/dx^3=48x+sinx so f"'(x)=48x+sinx |
Mr Calculus: U and diz ur quests...hmm...let me giv it a trial..I guess u wud use integration by part 2 complete it |
labodinho: score 2/5.U and dis ur score en...hmm... |
[quote author=Calculusf(x)]Pls.masters here.how can i integrate x^x dx...[/quote]U and diz ur quests...hmm...let me giv it a trial.. to integratex^x dx let u=x^x..apply In to both side Inu=Inx^x,Inu=xInx,by diff (1/u)du/dx=1+Inx -:du/dx=u(1+Inx)=x^x(1+Inx) -:dx=du/x^x(1+Inx) integx^xdx=integrax^x*du/x^x(1+Inx)..x^x cancels each oda.= integra1/(1+Inx)du... More solutions loading...... |
labodinho: (1)Itz not percentage plz oooo,was a mistake.Itz PENTAGON.If its polygon u mean den 1..16 2..100 3..X=8 4..12.5 5..N50W |
hillsnite: Square root of x^x =x^square root of x. Find x?Squre root of X^x=x^rootx, (x^x)^1/2=x^rootx, X^x/2=x^rootx, apply log to both side logx^x/2=logx^rootx, x/2logx=rootxlogx..logx cancel logx x/2=rootx,x=2rootx square both side x^2=4x :x cancel x -:x=4 |
U tried@aurorae bt derz a diff sir |
aurorae: uh,d only diff, I can deduce is dat max planck's eqn of energy was on the theory of radiation,and dat albert einsteins was on the photo-electric effect .while plancks is usually written as E=hv ,the einsteins is usually E or W=h(f-f0),0 written at d bottom.tho einstein explained planck's theory of quantum radiation more realistically in his photo-electric equation.there is no main diff. jst that einstein only delved deeper into max planck's hypothesis |
[quote author=Calculusf(x)]Thank God.i meet a thread like this at last...maths gurus here...try this question as a welcom...PERFECT NUMBER.is a number in which all its factors except itself are added to itself...e.g 6 in which the factors are 1,2 and 3.add them together it gives 6...another example is 28...in which the factors are 1,2,4,7 and 14...added to give 28...FIND TWO MORE PERFECT NUMBERS...mail me at omoyeleolalekanjacob@gmail.com and 2go with MATHEMAGICIAN[/quote]d ar 496,8128.etc i av u on my list |
A welcome quest 4 my guruz. Whats d diff bet max planck and albert eistens equation on 'energy' which is E=hf. Note:i dint say E=mc^2 |
Ortarico: Yes boss, it's oketunde2.Tnx chief |
Mr Calculus: I really need ur help hear guys.Plz guruz help out |
Mr Calculus: plz guyz need ur help:::Convert 1111.100110 base 2 to basePlz guys need ur help hear |
Ortarico: I need to be flogged, perfunctory calculation! I've seen my mistake, thanks boss, God bless!General ortarico are u on 2go? cauz i'l love having a guru on my list.. |
[quote author=Calculusf(x)].i know that...but you as mr calculus said integral 7^u du/cosx it's not possible to take cosx out just as if it's a constant.hadn't been it's ln2 or 7 or any constant...it can...but this one can not be done like that...THOUGH...i don't know the question but if someone gets it i will know[/quote]OK SIR...I think i get u nw |
Wen is d sales of 4m coming out |
Ortarico: Boss, I keep getting the same answer. Plz, show me my mistake boss.D ans is 810..jst cross check ur work again sir |
TopSpot: can u all imagine: i checked on jamb site for my result today and my score was upgraded. i had 230 before but now it is 233. that is additional 3 marks for my economics. the surprise came because i sat for cbt and i thought they are only upgrading the ppt guys. so if you have not checked your result and you sat for cbt, go and check ooo.Are u serious? |
Ortarico: Being explicit as in showing the working?U did wel boss ur ans is close but incorect |
Ortarico: hmmn. . . . .you've just thrown a big missile of 3 pages. My answer is 1/3n(810).plz b explicit am nt clear wit ur ans |
I really need ur help hear guys. If a+b+c=0,simplify:: [{x^(a^2 b^-1 c^-1)}]*[{x^(a^-1 b^2 c-1)}]*[{x^(a^-1 b^-1 c^2)}] Given that::a^3+b^3+c^3-3abc=(a+b+c)(a^2+b^2+c^2-ab-bc-ac) NOTE: * means multiply |
Simplify:::{9^(n-1)+9^n}^3/{3.27^(n-2)+27^(n-1)}^2 |
oyestephen: Gooooood morninf people.....how was your night ? @ortarico @labodinho @farano thanx guys for keeping this place lively...lemme help out too1)a=-16,l=72,Sn=252,n=?. Sn=n/2(a+l). 252=n/2(-16+72). 2x252=n(56). n=504/56=9. 2)D quest is nt clear |
[quote author=Calculusf(x)]...i understand this bro but it's not the answer coz you know u=sinx therefore du/dx=cosx...and dx=du/cosx...so the question becomes integral 7^u.du/cosx...you just took the cosx out of the integral function as if it's a constant...so,it can't be that bro...how can one integrate it from there...[/quote]Bro in integratn if u av integ2x it is dsam as 2integx. if u av integx/2 it is dsam as 1/2integx. u can try solving d exampls above u'l 5nd out dat its dsam. I hope u undstand |
Ortarico: @laboz, it has been solved. . . . . .@mr calculus you're welcome. Good morning house!Tnx chief |
labodinho: @ Mr Calculus,aw u dey nah,hope u kuming to stay wif us here?? @ortarico,i've seen d solution n tanx o.*LGT* whr do u resyd specifically? @all,una well done o.am doin gud chief |
Boladearo: 81^1/log3 divide by 36^1/log6, the logs are in base 2.NOTE::¥=divide Recall=logxbasey=1/logybasex, 81^1/log3¥36^1/log6=81^log2base 3¥36^log2base6, 81=3^4,36=6^2. 3^4log2base3¥6^2log2base6, 3^log2^4base3¥6^log2^2base6, 3^log16base3¥6^log4base6, RECALL=a^logxbasea=x, 3^log16base3=16 and 6^log4base6=4 ur ans=16/4=4 |
Greatings 2 all d gurus in d house |
oladoya: just before i sleep let somebody convert 1234.233 in base three to base five and let someone tell me the only number which is both even and prime. I know u know dis but becareful |
[quote author=Calculusf(x)]Pls.help me on this integration...integral 7^sinx dx[/quote]integ7^sinxdx Let u=sinx,du/dx=cosx, dx=du/cosx, integ7^sinx=integ7^udu/cosx, recal integ a^x=a^x/Ina integ7^udu/cosx=1/cosxinteg7^udu= 1/cosx*7^u/In7+C recal u=sinx.. 1/cosx*7^sinx/In7+C= 7^sinx/cosxIn7 +C |
ladokuntlad: pls help me find d value of x if x^2=4x. show workings oooo. hint x=4x^2=4x..first apply log to both sides logx^2=log(4*x) 2logx=log4+logx...by collecting lyk terms 2logx-logx=log4 logx=log4..log cancel log ::x=4 |
[/quote]U'l welcom sist