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rahul khurana Grade:
        

THE VALUE OF X SATISFYING  EQUATION                             X=(2+(2-(2+X)1/2)1/2)1/2   ?

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear rahul


 X=(2+(2-(2+X)1/2)1/2)1/2 


x≥ 0  ................1


square


x2 =(2+(2-(2+X)1/2)1/2)


or


x2 -2 =(2-(2+X)1/2)1/2


so x2 -2≥0


   so   x≥2   or x ≤-2


 from equation 1        x≥2


and RHS      2-(2+X)1/2 ≥ 0


   or     x≤2


 so only x=2 is possible


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Badiuddin

7 years ago
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