А $\displaystyle\int_0^1 \dfrac{1}{3}\,dx$ Б $\displaystyle\int_0^1 \dfrac{1}{4}\,dx$ В $\displaystyle\int_0^1 \sqrt{2}\,dx$ Г $\displaystyle\int_0^1 \dfrac{1}{2}\,dx$ Д $\displaystyle\int_0^1 1\,dx$