{"result":{"text":"L e t space Q equals open square brackets table row cell cos pi over 4 end cell cell negative sin pi over 4 end cell row cell s i n pi over 4 end cell cell cos fraction numerator begin display style pi end style over denominator begin display style 4 end style end fraction end cell end table close square brackets and space x equals open square brackets table row cell fraction numerator 1 over denominator square root of 2 end fraction end cell row cell fraction numerator 1 over denominator square root of 2 end fraction end cell end table close square brackets comma space then space straight Q cubed x space i s space equal space to"},"status":"ok"}