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if y=log2(2x^1/2-1) then find the value of y^2-y^-2

log2 means log with base 2..
asked Jul 9, 2014 in TRIGONOMETRY by anonymous
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1 Answer

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The equation is image

image

Apply Change of base formula image

image

Apply square root on each side.

image

  • Now find the value of image

image

Substitute image in image

image

image

image

image

image

answered Jul 9, 2014 by david Expert

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