Welcome, Guest: Register On Nairaland / LOGIN! / Trending / Recent / New
Stats: 3,165,562 members, 7,861,658 topics. Date: Saturday, 15 June 2024 at 04:24 PM

Nairaland Mathematics Clinic - Education (88) - Nairaland

Nairaland Forum / Nairaland / General / Education / Nairaland Mathematics Clinic (485447 Views)

Mathematics Clinic / 2015 Cowbell Mathematics Champion, Akinkuowo Honoured By School. / Lead City University Clinic Welcomes First Ever Baby Since 10 Years Of Opening (2) (3) (4)

(1) (2) (3) ... (85) (86) (87) (88) (89) (90) (91) ... (284) (Reply) (Go Down)

Re: Nairaland Mathematics Clinic by Laplacian(m): 7:56pm On Oct 24, 2013
smurfy:
Now click on the piece u want to move, wait a moment, click on where u want to put it, wait a moment then click Submit.
Note: You can play multiple games at the same time.
tanks alooooot bro...now we can row...its ur turn 2 move
Re: Nairaland Mathematics Clinic by MrCalculus(m): 8:19pm On Oct 24, 2013
d citizen:
The math general in the house,

Nobody has done justice to the third question posed by mikebis on page 57

I believe dat he extracted the question from a textbook called bouday

u^2/v + v^2/u =12

1/v + 1/u = 1/3.
it has been don a long time sir.check page 58.
u=2 and v=-6
Re: Nairaland Mathematics Clinic by MrCalculus(m): 8:27pm On Oct 24, 2013
Mr Calculus: if z=-16,express z in d form a+jb and find its fourth root
PLZ SIRS NO BODY HAS PROVIDED A SOLUTION TO DIS.
U GUYS SHOULD PLZ HELP ME OUT
Re: Nairaland Mathematics Clinic by AlphaMaximus(m): 8:36pm On Oct 24, 2013
Re: Nairaland Mathematics Clinic by Laplacian(m): 8:41pm On Oct 24, 2013
Mr Calculus: PLZ SIRS NO BODY HAS PROVIDED A SOLUTION TO DIS.
U GUYS SHOULD PLZ HELP ME OUT
z=-16 is a real number & cannot hav imaginary component...so if z=a+jb then a=-16, b=0...
If z^4=-16, then z=+4j or -4j
Re: Nairaland Mathematics Clinic by MrCalculus(m): 9:03pm On Oct 24, 2013
Laplacian:
z=-16 is a real number & cannot hav imaginary component...so if z=a+jb then a=-16, b=0...
If z^4=-16, then z=+4j or -4j
UR ANS IS NOT IT SIR.....I WILL POST D ANS WEN I GET HOME.
d solution is wat am lookin 4
Re: Nairaland Mathematics Clinic by MrCalculus(m): 9:07pm On Oct 24, 2013
rationalize:
1/(cuberoot2) -1
Re: Nairaland Mathematics Clinic by Nobody: 9:56pm On Oct 24, 2013
Laplacian:
tanks alooooot bro...now we can row...its ur turn 2 move

Your move wasn't registered. Did you click Submit?
Re: Nairaland Mathematics Clinic by Laplacian(m): 5:10am On Oct 25, 2013
smurfy:

Your move wasn't registered. Did you click Submit?
k, i just submitted it
Re: Nairaland Mathematics Clinic by jackpot(f): 6:07am On Oct 25, 2013
Alpha Maximus: I don't think a negative number such as -16 has a root
bro, you still far oooooo. It has ooooo. Na elementary complex number stuff. MAT101 in my school.

1 Like

Re: Nairaland Mathematics Clinic by jackpot(f): 6:31am On Oct 25, 2013
Mr Calculus: PLZ SIRS NO BODY HAS PROVIDED A SOLUTION TO DIS.
U GUYS SHOULD PLZ HELP ME OUT
in the form a+ib
z=-16+0i
[s]sorry, Mathematicians dont write the imaginary part with j like Physicists and Engineers [/s]

now, for the fourth root, i'll prefer working with the exponential form to avoid the impossible task of typing out square roots here.

z=-16+0i=16e^i(pi)=w4

Using the nth root of a complex number formula

w=nth root of |z| times e^i[(Argz+2k pi)/n] for k= 0, 1, 2 ,. . ., n-2, n-1

Thus, the fourth roots are simply

w= 2e^i(pi/4), 2e^i(3pi/4), 2e^i(5pi/4), 2e^i(7pi/4)
Re: Nairaland Mathematics Clinic by Laplacian(m): 6:58am On Oct 25, 2013
jackpot:
in the form a+ib
z=-16+0i
[s]sorry, Mathematicians dont write the imaginary part with j like Physicists and Engineers [/s]

now, for the fourth root, i'll prefer working with the exponential form to avoid the impossible task of typing out square roots here.

z=-16+0i=16e^i(pi)=w4

Using the nth root of a complex number formula

w=nth root of |z| times e^i[(Argz+2k pi)/n] for k= 0, 1, 2 ,. . ., n-2, n-1

Thus, the fourth roots are simply

w= 2e^i(pi/4), 2e^i(3pi/4), 2e^i(5pi/4), 2e^i(7pi/4)
...my mistake...
Re: Nairaland Mathematics Clinic by AlphaMaximus(m): 7:45am On Oct 25, 2013
Re: Nairaland Mathematics Clinic by AlphaMaximus(m): 8:10am On Oct 25, 2013
Finally back with some questions!
Question 1 : The equivalent of Mr Coker's grandson's life lived in days is Mr Coker's son's life lived in weeks, and also, the equivalent of his grandson's life lived in months is Mr Coker's life lived in years. Altogether, the sum of their ages is 120 years. In how many years will the ratio of Mr Coker's son's age to his grandson's age be 1/15 of Mr Coker's age and also how old was Mr Coker when the sum of the past ages of him , his son and grandson was 9 less than the current sum of their ages?
Re: Nairaland Mathematics Clinic by Mikebis(m): 8:55am On Oct 25, 2013
Mr Calculus: it has been don a long time sir.check page 58.
u=2 and v=-6
lol..no mind am
Re: Nairaland Mathematics Clinic by Mikebis(m): 8:59am On Oct 25, 2013
Any1 to solv dis
3^x +4^x=5^x
find x.no 1 to slv dis questn?
Re: Nairaland Mathematics Clinic by AlphaMaximus(m): 9:07am On Oct 25, 2013
Re: Nairaland Mathematics Clinic by Mikebis(m): 9:15am On Oct 25, 2013
Alpha Maximus: ..answer's obviously 2....and the best solution is graphical...and its been solved before undecided
i knw d answer is 2,buh we nid workings.prv ur answer,dat is wat dis thread is 4
Re: Nairaland Mathematics Clinic by Mikebis(m): 9:15am On Oct 25, 2013
Alpha Maximus: ..answer's obviously 2....and the best solution is graphical...and its been solved before undecided
i knw d answer is 2,buh we nid workings.prv ur answer,dat is wat dis thread is
Re: Nairaland Mathematics Clinic by jackpot(f): 10:32am On Oct 25, 2013
Laplacian:
...my mistake...
cool cool cool
Re: Nairaland Mathematics Clinic by Nobody: 11:02am On Oct 25, 2013
Mr Calculus: rationalize:
1/(cuberoot2) -1
hmmm ....the conjugate of a cube root is quite complicated .....i'l giv it a try tho'
Re: Nairaland Mathematics Clinic by Nobody: 11:11am On Oct 25, 2013
Prove that if tan theta * tan(theta + alpha) = k, then (k+1)cos(2*theta + alpha) = (1-k)cos alpha
Re: Nairaland Mathematics Clinic by Nobody: 11:22am On Oct 25, 2013
Mr Calculus: rationalize:
1/(cuberoot2) -1
there are certain tins in maths that I cant forget.. Smtin lyk dis..

Ans is (root 2) + 1
Re: Nairaland Mathematics Clinic by labodinho: 11:45am On Oct 25, 2013
Jackpot scares me off here i must say...


A lady??

hmmm!
Re: Nairaland Mathematics Clinic by Nobody: 11:50am On Oct 25, 2013
W4w 9uy5 4r3 501v31n9...7h475 9r347..4m bk 4941n....ju57 w3n7 70 r3fr35h....
Re: Nairaland Mathematics Clinic by Nobody: 12:16pm On Oct 25, 2013
benbuks: W4w 9uy5 4r3 501v31n9...7h475 9r347..4m bk 4941n....ju57 w3n7 70 r3fr35h....
Wow guys for solving...
Am I getting it?
Re: Nairaland Mathematics Clinic by Nobody: 12:22pm On Oct 25, 2013
benbuks: W4w 9uy5 4r3 501v31n9...7h475 9r347..4m bk 4941n....ju57 w3n7 70 r3fr35h....
Wow, guys are solving.. Thats great.. Am bk again.. Just went to refresh
Re: Nairaland Mathematics Clinic by Nobody: 12:37pm On Oct 25, 2013
smurfy:
Wow guys for solving...
Am I getting it?
..nt really..
Re: Nairaland Mathematics Clinic by Nobody: 12:38pm On Oct 25, 2013
I-am-Winner:
Wow, guys are solving.. Thats great.. Am bk again.. Just went to refresh
,yea u got it man.
Re: Nairaland Mathematics Clinic by AlphaMaximus(m): 12:52pm On Oct 25, 2013
Re: Nairaland Mathematics Clinic by jackpot(f): 1:48pm On Oct 25, 2013
Mr Calculus: rationalize:
1/(cuberoot2) -1
i hope you meant 1/[(cuberoot2)-1]

Now, since
1/(x-1)=(x2+x+1)/(x3-1),

we have (upon setting x=cuberoot2=21/3) that

1/[(cuberoot2)-1]

equals

(22/3+21/3+1)/(23/3-1)

which simply equals

22/3+21/3+1.


cool cool cool
Re: Nairaland Mathematics Clinic by jackpot(f): 1:59pm On Oct 25, 2013
I-am-Winner:
there are certain tins in maths that I cant forget.. Smtin lyk dis..

Ans is (root 2) + 1
hehehe. Bros, no be square root oooooo cheesy Na cube root.

they hardly teach this type of rationalization for high school sef.

Bro, i like your username oooo wink wink wink

1 Like

(1) (2) (3) ... (85) (86) (87) (88) (89) (90) (91) ... (284) (Reply)

DIRECT ENTRY Admission. / Mastercard Foundation Scholarship, Enter Here / 2016/2017 University of Ibadan Admission Thread Guide.

(Go Up)

Sections: politics (1) business autos (1) jobs (1) career education (1) romance computers phones travel sports fashion health
religion celebs tv-movies music-radio literature webmasters programming techmarket

Links: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

Nairaland - Copyright © 2005 - 2024 Oluwaseun Osewa. All rights reserved. See How To Advertise. 34
Disclaimer: Every Nairaland member is solely responsible for anything that he/she posts or uploads on Nairaland.