HAVE US CALL YOU
HAVE US CALL YOUIf f(x – 1/x) = x2 + 1/x2, f(2) = ?
a) 6
b) 4
c) 2
d) 8
Ans: a) 6
f(x – 1/x) = x2 + 1/x2 = (x – 1/x)2 + 2
∴f(x) = x2 + 2
f(2- = 4 + 2 = 6
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If f(x – 1/x) = x2 + 1/x2, f(2) = ?
a) 6
b) 4
c) 2
d) 8
Ans: a) 6
f(x – 1/x) = x2 + 1/x2 = (x – 1/x)2 + 2
∴f(x) = x2 + 2
f(2- = 4 + 2 = 6
Developed and Maintained By