JEE Main 2007Annual, Paper 1MathematicsEasyLimit, Continuity and Differentiability420× since 2002If ppp and qqq are positive real numbers such that p2+q2=1{p^2} + {q^2} = 1p2+q2=1, then the maximum value of (p+q)(p+q)(p+q) isAOption A. 12{1 \over 2}21BOption B. 12{1 \over {\sqrt 2 }}21COption C. 2{\sqrt 2 }2DOption D. 222CheckSkip · show solution