UPSC CDS 1 2021 Math Paper

© examsiri.com
Question : 23 of 100
 
Marks: +1, -0
If
x
a
+
y
b
=a+b
and
x
a2
+
y
b2
=2
, then what is
x
a2
−
y
b2
equal to?
Go to Question: