We have to solve the equation {{MATH_8}} Since, {{MATH_9}} for {{MATH_10}}, it follows that the solution is in the interval {{MATH_11}}. But, from the graph it follows that {{MATH_12}}, for {{MATH_13}}. So, we have to solve the equation {{MATH_14}} {{CMD_15}} {{MATH_16}} at {{MATH_17}}