Algebra - no one can solve this!!!!!!

1

skygirl ·2008-12-25 07:20:51

x^log₁₀x² = 10 x²

we can write this as...

log_x(10x²) = log₁₀x²

=> log_x10 + 2 = 2 log₁₀ x

take log₁₀ x = y

then the equation becomes:

1/y + 2 = 2y

=> y= (1Â±âˆš3)/2

x = 10^y

we will get two values of y ... so two values of x..

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33

Abhishek Priyam ·2008-12-25 08:41:00

to add to the beauty of soln...

in third line ..............in brackets (as xâ‰ 1)

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1357

Manish Shankar ·2008-12-25 08:50:04

Now everyone wants to be pinked :)

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1

skygirl ·2008-12-25 08:51:52

aap aisa kyun bol rahe hai?

soln achha nahi tha ?

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33

Abhishek Priyam ·2008-12-25 08:53:50

:P

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11

Anirudh Narayanan ·2008-12-25 08:54:13

can you please explain how u got the second line? [7]

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33

Abhishek Priyam ·2008-12-25 08:59:08

Me:are second step kya ki ho
Sky: ??
taken log

me: no one can solve it

Sky: like x^y= p
so log p base x =y
like dis

me:
how u did it ... no one can solve it :P

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11

Anirudh Narayanan ·2008-12-25 09:00:44

GOt it [4]

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3

msp ·2008-12-25 09:00:44

taking log on both sides and use log(ab)=loga+logb

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1

skygirl ·2008-12-26 08:14:58

yes very correct..

that could also be an ans..

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