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-k x+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)=x^(2)-kx+5 is increasing on [2,4], then

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

If the function f(x) = x^(2) - ax + 5 is strictly increasing on (1,2) , then a lies in the interval

The function f(x)=x^(2)+2x-5 is increasing in the interval

The function f(x) = x^2 is increasing in the interval

If the function f(x)=Kx^3-9x^2+6x+3 is increasing Aax in R then K in

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)

The function f(x)=2x^3+9x^2+12x+20 is increasing in the interval