# How to solve the following optimization problem with two constraints?

$$G (x, y) = xk_1 + (1-x) log_2 (1+ frac {xyk_2} {1-x})$$,

subject to: $$0 le x le 1$$, $$0 le and le 1$$,
where $$k_1$$ Y $$k_2$$ They are two positive quantities. Individually it is observed that $$G (x, y)$$ is a concave function of $$x$$ when $$and$$ remains constant and is also a concave function of $$and$$ when $$x$$ It is considered as constant. What will happen when both restrictions are there?