{"result":{"text":"equals 2 plus open parentheses n minus 1 close parentheses integral subscript 0 superscript pi divided by 2 end superscript open parentheses sin x plus cos x close parentheses to the power of n minus 2 end exponent open square brackets 2 minus open parentheses sin x plus cos x close parentheses squared close square brackets d x"},"status":"ok"}