Nawal99 Nawal99
  • 25-05-2021
  • Mathematics
contestada

X= root (y-1/y+1) ( make “y” as subject. ) number 19

X root y1y1 make y as subject number 19 class=

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Eduard22sly
Eduard22sly Eduard22sly
  • 30-05-2021

Answer:

y = (x² + 1) / (1 – x²)

Step-by-step explanation:

x = √[(y – 1)/(y + 1)]

We can make y the subject of the expression as shown below:

x = √[(y – 1)/(y + 1)]

Take the square of both side

x² = (y – 1) /(y + 1)

Cross multiply

x²(y + 1) = (y – 1)

Clear bracket

x²y + x² = y – 1

Rearrange

x² + 1 = y – x²y

Factorise

x² + 1 = y(1 – x²)

Divide both side by (1 – x²)

y = (x² + 1) / (1 – x²)

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