Find the intervals on which the function `f(x) = 10 - 6x - 2x^(2)` is (a) strictly increasing (b) strictly decreasing.

Find the intervals on which the function f(x) = 6 - 9x - x^(2) is (a) strictly increasing (b) strictly decreasing

Find the intervals in which the function f(x) = 10 - 6x - 2x^2 is strictly increasing.

Find the intervals in which the function f(x) = 10 - 6x - 2x^2 is strictly decreasing.

Find the intervals in which the function f given by f(x)=2x^(2)-3x is (a) strictly increasing (b) strictly decreasing

Find the intervals in which the function f given by f(x)=x^(2)-4x+6 is (a) strictly increasing (b) strictly decreasing

Find the intervals in which the function f given by f(x) = 2x^(2) - 3x is (a) strictly increasing (b) strictly decreasing.

Find the intervals in which the function f given by f(x)=x^2-4 x+6 is (a) strictly increasing (b) Strictly decreasing

Find the intervals in which the function : f (x) = 20 - 9x + 6x^2 - x^3 is strictly increasing.