Question

Make b the subject of the formula : a = (1 + b^2)/(1 - b^2). Hence, find b, when a = 1.

NO SPAMMING

Answer 1

a = 1-b^4
$b = \sqrt[4]{1 - a}$
when a =1
b =0

Answer 2

when a=1
1=1+b^2/1-b^2
1-b^2=1+b^2
2b^2=0
b=0
is your answer