Question Of the Day - 13th January 2009

33

Abhishek Priyam ·2009-01-12 22:00:33

[12]

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1

Philip Calvert ·2009-01-12 22:02:08

same here pirate [12]

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33

Abhishek Priyam ·2009-01-12 22:02:43

x²+4x+1=√x+3-2

I think that 2 there is 4 a purpose [12]

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1

Philip Calvert ·2009-01-12 21:26:10

I am getting three solutions

sorry only two

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62

Lokesh Verma ·2009-01-12 22:19:34

√x+3-2

actually notice that both 3 and 2 are here for a purpose!

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3

msp ·2009-01-12 22:25:15

sir i am getting only 2 solns sir...

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1

Akshay Pamnani ·2009-01-12 22:25:42

I got the trick seeing question for 3 seconds
inverse of each other
so solution same as that of x=f(x)

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1

Akshay Pamnani ·2009-01-12 22:26:01

so 2 solutions

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62

Lokesh Verma ·2009-01-12 22:30:05

good one akshay :)

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9

Celestine preetham ·2009-01-13 01:35:56

but akshay u r rong

its f(x)= f-1(x)

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9

Celestine preetham ·2009-01-13 01:37:15

also i see no point at this trick please explain ? ;)

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62

Lokesh Verma ·2009-01-13 01:46:44

see the point is that'

f^-1(x) is the mirror image of f(x) along the line x=y

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9

Celestine preetham ·2009-01-13 02:16:38

yes i knew u were goin to say this , but this graph method can be applied directly as priyam did na

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13th January 2009

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13th January 2009

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