Question

( A t x=2 )
( 2 a=4 a+2 b+3 quad ) Solving ( 0 . Q )
( 3 a+b=0 )
( Rightarrow a+b=-3 / 2 rightarrow 0 quad=frac{a+b}{2 a+3 n} )
( f^{prime}(x) ) at ( x=2 )
( a=2 a x+b )
( vec{a} a=4 a+b )
( varepsilon_{-} b=-3 a=-9 / u )
( Rightarrow quad 3 a+b=0 quad Rightarrow )

# Single Choice a r<2 f(x)=12-3x+3, x22 Let If fis differentiable for all x, then the value of (ab) is equal to : A (1,2)

Solution