Numerical integration using trapezoidal rule gives the best result for a single variable function, which is

The real root of the equation $$5x-2cosx=0$$ (up to two decimal accuracy) is

Using the trapezoidal rule, and dividing the interval of integration into three equal sub-intervals, the definite integral $$\,\,\int\limits_{ - 1}^{ + 1} {\left| x \right|dx\,\,} $$ is

Match the CORRECT pairs.