Daily Graph 13-04-09

Draw the graph of

{[x]+1/2} = {x2}

10 Answers

11
Subash ·

simplifies to

1/2={x2}

so x2=1/2+[x2]

62
Lokesh Verma ·

subash.. there is a much simpler way..

why did you need the second step.

The first step ws good enough!

11
Mani Pal Singh ·

x=1/√2,-1/√2 r 2 solutions 4m (-1,1)

11
Mani Pal Singh ·

11
virang1 Jhaveri ·

See consider x as a + b where a is the integer part while b is the fractional part
(a+b)2 = a2 + b2 + 2ab
Since it is {x2} be we will consider b2 + 2ab
Therefore by substituting a = 1,2,3,....n and b by considering
2b2 + 4ab = 1

1
palani ............... ·

EDITED

11
Mani Pal Singh ·

BHAI SORRY
1/ROOT 2 SATISFY KARTA HAI

11
Anirudh Narayanan ·

\left\{x^2 \right\}=\frac{1}{2}

Thus

x^2=\frac{1}{2}+I ; \; where\; I\; is\; an\; Integer

So i agree with mani and palani's basic graph shapes but.....no lines will appear to the left of I=0...............this is because, after that, I will be <-1/2 and I+1/2 will be <0.......

So the lines will be

x=\pm \sqrt{0+\frac{1}{2}};\; \; \; x=\pm \sqrt{1+\frac{1}{2}};\; \; \; x=\pm \sqrt{2+\frac{1}{2}},..............

Bhaiya, pls see if i'm correct

62
Lokesh Verma ·

you have missed the -ve terms..

11
Anirudh Narayanan ·

ok bhaiya....edited it

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