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Solve This Problem & Be Hired as Consultant by Neyozak: 2:35pm On Oct 06, 2015 |
2raised to power 2x = 8x 1 Like |
Re: Solve This Problem & Be Hired as Consultant by Neyozak: 2:43pm On Oct 06, 2015 |
pls step by steps solution |
Re: Solve This Problem & Be Hired as Consultant by Thavybe(m): 3:09pm On Oct 06, 2015 |
are you saying (2^2x) =8x |
Re: Solve This Problem & Be Hired as Consultant by chipretty48(f): 3:22pm On Oct 06, 2015 |
2^2x=8
2^2x=2x2x2
2^2x=2^3
when u cancel both 2 in the bracket, you have:
2x=3
divide both sides by 2
2x/2=3/2
x=3/2 5 Likes 1 Share |
Re: Solve This Problem & Be Hired as Consultant by Bhayomi(m): 3:37pm On Oct 06, 2015 |
chipretty48:You miss it, sorry |
Re: Solve This Problem & Be Hired as Consultant by Thavybe(m): 3:37pm On Oct 06, 2015 |
chipretty48:it is 8x not 8 2 Likes |
Re: Solve This Problem & Be Hired as Consultant by crotonite(m): 3:45pm On Oct 06, 2015 |
. . //ans.ComingSoon = true; //wait++; **modified*** since 2^2x = 8x let x = 2. 2^(2*2) = 8*2. 2 ^ 4 = 16. ;which is true. simple as abc. 3 Likes |
Re: Solve This Problem & Be Hired as Consultant by clementnoble22(m): 3:50pm On Oct 06, 2015 |
Neyozak:Guy recheck ur question... I think this question is wrong. 2^2x=8x ---> Wrong 2^2x=8---> Right Solution 2^2x=2^3 2x=3 x= 3/2 3 Likes |
Re: Solve This Problem & Be Hired as Consultant by Bhayomi(m): 3:53pm On Oct 06, 2015 |
crotonite:No, that's not how to do it. 1 Like |
Re: Solve This Problem & Be Hired as Consultant by segedy: 3:56pm On Oct 06, 2015 |
2x = 8x (2^3)x = 8x Thus, (2*2*2)x = 8x solved Read the question again...I may be wrong! But you gave a wrong question if what I'm thinking now is correct...it should become a polynomial.. but there's no way that's gonna run! Or it could be 2^2x = 8x; 2^2x = (2^3)x: (2^2x)/(2^3) = x; 2^(2x - 3) = x; ...can't go futher o, idea is needed 1 Like |
Re: Solve This Problem & Be Hired as Consultant by crotonite(m): 3:59pm On Oct 06, 2015 |
segedy: |
Re: Solve This Problem & Be Hired as Consultant by NOBODYY: 4:00pm On Oct 06, 2015 |
. |
Re: Solve This Problem & Be Hired as Consultant by zenith4biz(m): 4:11pm On Oct 06, 2015 |
2^2x=8x
2*2*2x=8x
8x=8x |
Re: Solve This Problem & Be Hired as Consultant by flossy007: 4:11pm On Oct 06, 2015 |
2^ 2x = 8x Log100 ^2x = 8x ( log to base 10) 100^2x = 10^8x (10^2) ^ 2x = 10^8x (2x)^2 = 8x 4x^2 = 8x X^2 = 2x X = 2 Hope I got it 2 Likes |
Re: Solve This Problem & Be Hired as Consultant by ayindepremier: 4:14pm On Oct 06, 2015 |
see d 2, see d x and see d 8 now. they are mathematical expressions and my statement is "lazical" expression. zooming... |
Re: Solve This Problem & Be Hired as Consultant by engrrichie92(m): 4:16pm On Oct 06, 2015 |
2^2x = 8x Introducing log to both sides log2^2x = log8x log2^2x = log 8 + logx 2xlog2 = log 8 + logx Na so i hang o...im coming back with the solution, gimme ten mins 2 Likes |
Re: Solve This Problem & Be Hired as Consultant by Neyozak: 4:17pm On Oct 06, 2015 |
Neyozak: Gurus in the house, the question is correct. Sure d solution is 2. But convincing steps to the solution is what is required. Mathematician goodluck. |
Re: Solve This Problem & Be Hired as Consultant by afeezet(m): 4:20pm On Oct 06, 2015 |
Re: Solve This Problem & Be Hired as Consultant by flossy007: 4:21pm On Oct 06, 2015 |
Check the solution I posted some mins ago. Neyozak: |
Re: Solve This Problem & Be Hired as Consultant by afeezet(m): 4:21pm On Oct 06, 2015 |
U need the workings try to confirm the first one |
Re: Solve This Problem & Be Hired as Consultant by Neyozak: 4:21pm On Oct 06, 2015 |
flossy007:U tried but Ur was not too convincing! 2 Likes |
Re: Solve This Problem & Be Hired as Consultant by Thavybe(m): 4:22pm On Oct 06, 2015 |
nah |
Re: Solve This Problem & Be Hired as Consultant by dejt4u(m): 4:22pm On Oct 06, 2015 |
Neyozak:2^2x=8x, 2^2x=2^3(x), (2^2x) / (2^3) = x, 2^(2x-3)=x, 2^(2x-3)/4^(2x-3)=x/4^(2x-3), (1/2)^(2x-3)=x*(1/4)^(2x-3), (0.5)^(2x-3)=x*(0.25)^(2x-3), (1-0.5)^(2x-3)=x*(1-0.75)^(2x-3), by binomial approx. 1-(2x-3)*0.5...= x*[1-(2x-3)*0.75+...] re-arrangin gives; 1-x+3/2=x-3x/4*(2x-3) = 4-4x+6=4x-6x^2+9x or 6x^2-17x+6=0, x=2.4 or - 0.42 Reference to laplacian of nairaland maths clinic |
Re: Solve This Problem & Be Hired as Consultant by Alvanify(m): 4:27pm On Oct 06, 2015 |
2x^2=8x soln divide thru by x 2x^2/x=8x/x therefore, 2x=8 x=4ans 1 Like |
Re: Solve This Problem & Be Hired as Consultant by flossy007: 4:27pm On Oct 06, 2015 |
Haha. Not convincing? I'm pretty sure that's the solution to that question. But i'll let others have a go at it. Neyozak: |
Re: Solve This Problem & Be Hired as Consultant by Softhands(m): 4:33pm On Oct 06, 2015 |
2^2x =8x..
take the equation and make it equal to zero
2^2x-8x=0
introduce differentiation,
dy/da ( 2^2x-8x)
4x^(2x-1) - 8 =0
4x^(2x-1)=8
2 X 2^ (2x-1) = 2^3
2x-1=3
2x=3 +1; 2x=4,
x=4/2= 2 final ans , x=2 Danke. |
Re: Solve This Problem & Be Hired as Consultant by Softhands(m): 4:38pm On Oct 06, 2015 |
2^2x =8x..
take the equation and make it equal to zero
2^2x-8x=0
introduce differentiation,
.
dy/da ( 2^2x-8x)
.
4x^(2x-1) - 8 =0
.
4x^(2x-1)=8
.
2 X 2^ (2x-1) = 2^3
.
2x-1=3
.
2x=3 +1; 2x=4,
.
x=4/2= 2
. final ans , x=2 Danke. |
Re: Solve This Problem & Be Hired as Consultant by INCREDIBLEGUY: 4:40pm On Oct 06, 2015 |
2^ 2x = 8x Log100 ^2x = 8x ( 1*1=11+2+2 =22+1000000+10000000000 =2223556777777777777 |
Re: Solve This Problem & Be Hired as Consultant by Neyozak: 4:48pm On Oct 06, 2015 |
dejt4u:Tried but no. |
Re: Solve This Problem & Be Hired as Consultant by Neyozak: 4:50pm On Oct 06, 2015 |
Softhands:Tried but what function is y and a. No my tutor |
Re: Solve This Problem & Be Hired as Consultant by Softhands(m): 4:56pm On Oct 06, 2015 |
Neyozak:Twas a typo o jareh. but that's d best approach so far. at least professionally. |
Re: Solve This Problem & Be Hired as Consultant by Neyozak: 4:57pm On Oct 06, 2015 |
flossy007:But u tried sha! But not convincing. Idea my guy. 50% 4 u. 1 Like |
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