Solve the following equation in the interval [0, 2 [math]].
Give the answer as a multiple of [math].
Do not use decimal numbers. The answer should be a fraction or an integer.
Note that [math] is already included in the answer so you just have to
enter the appropriate multiple. E.g. if the answer is [math] you should
enter 1/2. If there is more than one answer enter them separated by commas.