" 44.If "f(x)=x^(2)-kx+5," is increasing on "[2,4]" then "

If the function f(x)=x^(2)-kx+5 is increasing on [2,4], then

If the function f(x)=x^(2)-kx+5 is increasing on [2,4], then (a) k in(2,oo)(b)k in(-oo,2)(c)k in(4,oo)(d)k in(-oo,4)

If the function f(x)=2x^(2)-kx+5 is increasing on [1,2], then k lies in the interval (a) (-oo,4)(b)(4,oo)(c)(-oo,8)(d)(8,oo)

If the function f(x) =2x^2-kx+5 is increasing on [1,2] then k lies in the interval

If the function f(x)=2x^2-kx+5 is increasing on [1,2], then k lies in the interval

If the function f(x)=2x^(2)-kx+5 is strictly increasing in [1,2] ,then k' lies in the interval

If f(x)= kx^3-9x^2+9x+3 is increasing on R then

If f(x)= kx^3-9x^2+9x+3 is increasing on R then

If f(x) =kx^3-9x^2+9x+3 is increasing on R,then

If f(x) = x^(2) + kx + 1 is increasing function in the interval [ 1, 2], then least value of k is –