CUET Preparation Today
CUET
-- Mathematics - Section B2
Calculus
If the function $f(x)= a log x + \frac{b}{x}+x$ has extreme values at $ x= 1 $ and $x= 3 $, then (a, b) is :
$\left(-\frac{1}{2},-\frac{3}{2}\right)$
$(4, 3)$
$(-2, -1)$
$(-4, -3)$
